DOLPHIN CLASS ASSOCIATION HANDBOOK … · Dolphin Handbook 15/03/2006.DOC 15/03/2006 DOLPHIN DESIGN...

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Dolphin Handbook 15/03/2006.DOC 15/03/2006

DOLPHIN CLASS ASSOCIATION

HANDBOOK

This publication will be reviewed when necessary in order to keep abreast of

progress.

The Dolphin Class Association will welcome

constructive criticism or suggestions for improvement of this handbook.

First Publication Jan 1984 Second Publication Mar 1986 Third Publication Oct 1986 Fourth Publication Apr 1995 Fifth Publication Apr 2000 Sixth Publication Mar 2002 Updated Oct 2002 Update [Typographical errors] Mar 2006 Updated May 2007

LIST OF CONTENTS

Dolphin Design

Dolphin Story

Trophy Record

Boat Registration and Association meetings

Constitution

Class Rules [incorporating the Class Drawings]

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DOLPHIN DESIGN Designed by Heinz Horstbrink

Length – Overall 4,60m Length - Waterline 4.25m Beam 1.46m Length - Mast 6.06m Length - Boom 2.635m

Length - W/Pole 1.70m Weight - Hull 75 kg Sail Area - Main 9.0m² Sail Area - Jib 3.6m² Portsmouth Rating 109

THE DOLPHIN STORY A sailing dinghy, which satisfies the need for ease of handling by a two-man crew, combined with practical single-handed pleasure sailing capability, the DOLPHIN succeeds in offering both characteristics in addition to superb racing performance. With these criteria in mind, Heinz Horstbrink designed the DOLPHIN in the early eighties. Heinz further specified that the craft should have simple, standardised controls and that operating and maintenance expenses should be minimal. DOLPHIN NO. 1 was carefully crafted from wood. The hull was then used to generate the first mould, from which the fibreglass hulls are drawn. The DOLPHIN is an all-fibreglass dinghy measuring 4,60m from stem to stern. Sloop rigged she carries jib (3.6m

2 )and mainsail (9.0m

2 ). The cockpit is spacious, almost

2,44m in length and is surrounded by four separate buoyancy compartments formed by the bow and stern sections and side tanks. The hull is of sandwich construction, stiffened by two longitudinal ribs. A feature of the DOLPHIN is the outstanding finish. Centreboard casing top, thwart, centreboard, rudder, rudderstock and tiller are varnished wood. The cockpit floor is coated with non-slip paint. Stringent class rules require that all DOLPHINS must remain virtually identical. The DOLPHIN thus remains both competitive and a sound investment. Specified fittings consist of:- adjustable jib fairleads with cleats mounted on the side tanks, mainsheet block mounted on the aft end of the centreboard casing, kicking strap, cunningham, clew outhaul, toe straps for both helmsman and crew, and whisker pole. The mast is tapered and stayed with fixed spreaders. Two self-bailers are fitted underneath the thwart. The centreboard may be controlled by two lines led aft and the rudder may be raised. The jib and main halyards are stowed by two neat shock cords mounted on the forward bulkhead. The DOLPHIN has a beautifully balanced helm and performs superbly under all conditions. Control response is quick, safe and confidence inspiring. The ability to plane, even to windward, astonishes even the best of dinghy sailors. For handicapping purposes the DOLPHIN is rated at 109 Portsmouth yardstick. (This can be compared to the Laser at 114 and the Fireball at 105). The DOLPHIN Class Association is properly constituted and affiliated to South African Sailing. Membership of both associations is obligatory for participation in racing events.

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TROPHIES

DOLPHIN NATIONAL CHAMPIONSHIPS

The "MYRA MARAIS MEMORIAL TROPHY" : 1 Trophy for overall winning helmsman 1 Trophy for overall winning crew Donated by Anne Engelbrecht and presented to the Association (Deed of Gift)

HUSBAND AND WIFE TROPHY 1 Silver Cup for first Husband and Wife team in the Nationals.

MASTER'S TROPHY (Heinz Horstbrink Trophy) Donated by BKG Boats and presented to the Association A pair of Dolphins moulded in blue glass and mounted within a bell case (Presented by the Dolphin Association in memory of Heinz Horstbrink, the Dolphin designer)

THE LEE FAMILY TROPHY Presented at the National Championships to the first youth skipper under the age of 19 years on the day of the regatta (Presented by Peter and Janet Lee)

DOLPHIN TRANSVAAL CHAMPIONSHIPS 1 Trophy for overall winning helmsman and crew Donated by John Wright and presented to the Association

MASTER'S TROPHY TO BE PRESENTED AT PROVINCIAL [NSA]

CHAMPIONSHIPS 1 Cannon on wooden base - to be eligible for this trophy the skipper and crew must be at least 40 years of age. (Donated by Vic. Gil and presented to the Association.)

DOLPHIN HIGHVELD CHAMPIONSHIPS 1 Trophy for overall winning helmsman and crew Donated by John Wright and presented to the Association

DOLPHIN GRAND PRIX SERIES 1 wooden plaque for winning helmsman and crew 1 wooden plaque for second helmsman and crew 1 wooden plaque for third helmsman and crew Donated by Howard. Hughes and presented to the Association

DOLPHIN CAPSIZE KING 1 Dolphin on wooden base presented to the skipper who has a very spectacular capsize during a Provincial or national Championship. (Donated by John. Geekie and Russell. Sheppard and presented to the Association.) Subsequently rebuilt by A Roffe - china dolphin replaced by a carved wooden dolphin.

LOWVELD TROPHY Gilt with 2 columns surmounted by 1 eagle (Presented by Henry Sinclair to the Dolphin Class Association)

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BOAT REGISTRATION AND ASSOCIATION MEMBERSHIP We invite you to join the Dolphin Class Association and would welcome your support in furthering the growth of the Dolphin Class and establishment of this class in all possible areas. To sail your Dolphin you have to be a member of the Dolphin Class Association, South African Sailing and be in possession of a valid measurement certificate. Here's how to go about it:-

1. Contact the Northvaal Sailing Authority 011-824 2400 or P.O. Box 4209,

Germiston South, 1411, who will give you the contact number for the current Class Secretary from whom you can request the following forms and information.

2.

a. to join South African Sailing. [If you are a member of a Sailing Club, you would already be a member of South African Sailing]

b. to join the Dolphin Class Association and c. to apply for Measurement of your boat.

[A new boat should have been measured before being sold and the measurement certificate should be available from the builder]

3. On receipt of these forms, fill in all the relevant information and make one

payment to the Dolphin Class Association, all amounts as prescribed on the forms. Return the forms to the Dolphin Class Association.

4. The Dolphin Class Association will advise you of the measurer's name and

how to contact him. 5. Contact your measurer and arrange a date to measure your boat.

6. Once the boat is measured, the Dolphin Class Association will issue your

measurement certificate and keep particulars on their records. 7. If you have bought a second hand Dolphin it will probably be measured and

you should then forward your measurement certificate to the Dolphin Class Association for endorsement into your name.

If you have any problems please do not hesitate to contact the current chairman or secretary of the Dolphin Class Association. In any event we wish to obtain your home and business phone numbers, postal address and e-mail address for contact and newsletters. We look forward to seeing you on the water and meeting you ashore with a friendly welcome from all proud Dolphin owners.

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DOLPHIN CLASS ASSOCIATION OF SOUTH AFRICA

CONSTITUTION

1. NAME The name of the Association shall be "Dolphin Class Association of South Africa”.

2. EMBLEM The Emblem of the class shall be the established form of the Dolphin Dorsal Fin in black.

3. FLAG The flag shall be the black Class Emblem mounted in the middle of a light blue field.

The international coad flag is the “K” flag.

4. OBJECTS Objects of the Association are : a. To maintain the Dolphin as a simple, inexpensive, strictly controlled one-

design yacht. b. To provide a medium for exchange of information amongst Dolphin

sailors and enhance the enjoyment of these yachts. c. To promote and develop Dolphin Class Racing in South Africa and

internationally under uniform rules. d To encourage and foster the spirit of sailing for enjoyment in sport and

recreation.

5. JURISDICTION The Association has authority over all activities of the Dolphin class throughout South Africa and it's powers shall be vested in and carried out by Provincial Associations and Fleets as provided in this Constitution and By-Laws passed pursuant to the provisions hereof All subject to and in accordance with the General Rules and By-Laws of the International Sailing Federation and the South African Sailing prescriptions thereto.

6. NATIONAL ORGANISATION - NATIONAL EXECUTIVE a. The Association shall be governed by the National Executive

Committee, comprised of a Chairman, National Executive Secretary and the Chairman of each Provincial Committee from time to time holding office and two members appointed at the Annual General Meeting and such additional officers to be appointed by the National Executive Committee for such term as it may from time to time determine.

b. The Executive Officers, other than the Executive Secretary, shall be elected annually at the Annual General Meeting, to be held at a place which the Executive Committee shall determine, and shall hold office until their successors are elected.

c. The Executive Secretary shall be appointed by the elected members of the Executive Committee and shall hold office for such term and upon such conditions as the Executive committee shall decide. The Secretary shall be responsible for the management of the business of

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the Association, subject to and in accordance with the By-Laws and direction of the Executive Committee, including :

i. The co-ordination of Inter-Provincial activities and events. ii. Maintenance of all membership records and information in conjunction with SA Sailing.

d. The Executive Committee may make By-Laws for any purpose necessary to effectively carry out the functions and responsibilities of the Dolphin Class Association.

7. PROVINCES : PROVINCIAL ASSOCIATIONS AND COMMITTEES

a. The Executive Committee may establish by By-Law, Provincial Association defined with due regard to region, distance, population and geography appropriate to the development of the Dolphin Class and fulfilment of the objects of the Association.

b. Provincial Committees comprised of a Chairman, Vice-Chairman, a

Secretary and a Treasurer shall be elected at an Annual General Meeting of members in each province, to hold office until their successors are elected by vote of the membership at a duly notified general meeting of the Province.

c. The Provincial Committees shall consist of the foregoing officers and

may appoint such additional officers to hold office for such terms as they may determine, except that such officers shall be approved by the membership at the next Annual General Meeting of the Province.

d. The Provincial Officers shall have the authority and responsibilities

defined in the Provincial Association By-Law. e. Each Province shall be administered in accordance with and subject

to the provisions of the Constitution. f. The boundaries of the Provincial Association may be varied by the

Executive Committee on the application of the Province concerned and provinces be amalgamated with the approval of the Executive Committee.

g. A Provincial Committee may make Provincial By-Laws, subject to

approval by the Executive Committee and the provisions of this Constitution, for any purpose necessary to carry out it's function and responsibilities in the management of the Dolphin class in it's province.

h. If any Provincial Association is within the jurisdiction of a Provincial

Sailing Authority, the Provincial Association shall be subject to any rules, regulations and directions of the Provincial Sailing Authority in addition to the requirements of this Constitution.

8. MEMBERSHIP

a. Any member of SAS (South African Sailing) may become a member of the Dolphin Class Association by making application, provided that the applicant has not previously been disqualified or suspended from membership by decisions of SAS or National or Provincial authorities.

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b. An application for membership implies that the applicant undertakes

and agrees to be bound by the Constitution and By-Laws of the Association upon being accepted to membership.

c. A member of the Association, ipso facto, belongs to the Provincial

Association in which he normally sails, even though such place may not be his permanent residence, but such member, for valid reason and with the approval of both Provincial Chairmen, may select instead, the Province in which he has his permanent residence.

d. The Executive Committee may grant Honorary Membership in the

Association for such period as it determines, to any person who, through special contribution to the Class or through special relationship to the Association is deemed meritorious.

e. The Executive Committee may grant Honorary Life Membership to

any member who, in the opinion of the Executive Committee, has made an exceptional contribution to the promotion of yachting.

f. Honorary and Honorary Life members are entitled to full privileges of

membership, but are not required to pay the annual Association fees. g. Membership in the Association shall not be open to any company,

partnership, group or other Association unless specifically authorised in any instance by the National Executive and the National Executive may impose such terms, conditions or qualifications on any such membership as it shall deem appropriate.

h. The National Executive shall have the power to review and adjust the

Association dues and any changes will be notified at least three months before payment is due.

i. Subscriptions will be due in full by 31st January each year. j. Membership shall include immediate family, i.e. wife/husband and

children under 18. For the purpose of voting, only one person per paid up member has voting rights. There is no junior division or category in the Class with reference to membership fees or regatta entries.

9. SUSPENSION AND REMOVAL FROM OFFICE

A member may be suspended from membership of the Association by action of the Executive Committee for gross violation of the Rules and By-Laws, for committing an unlawful action in relation to the Association or any of it's members, or for any unsportsmanlike conduct contrary to the interests of the members of the Association or the principles of the Association. The duration of the suspension shall be fixed by the Executive Committee, but may not exceed two years. A member under suspension shall be precluded from racing and all privileges of Association membership for the full period of suspension.

10. APPEALS

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Any dispute arising in relation to eligibility to race, the interpretation of this Constitution, the By-Laws or similar matter, other than any dispute in the interpretation of the Rules or protest within the jurisdiction of the relevant Racing Rule, may be made to the Executive Committee whose decision shall be final and binding.

11. BY-LAWS

The Executive Committee may make By-Laws for the purpose of carrying out the objects of this Constitution and of the Dolphin Class Association and, without restriction of the generality of the foregoing, may make By-Laws:

a. Respecting the appointment of Representatives. b. Respecting the establishment of Provinces and the power of the Provincial Committee. c Respecting the Constitutions and By-Laws of Provincial Committees. d. Respecting registration of numbers and collection of dues in

accordance with the requirements of SAS

e. Respecting the measurement of boats and measurement fees in accordance with the requirements of SAS.

f. Respecting the conduct of championships and regattas, including the

classification of regattas and the eligibility of members for major racing events.

g. Respecting the acceptance of deeds of gifts and trophies. h. Changing the Headquarters of the Association. i. Respecting the procedures for meetings of the Association Executive

Committee by mail or other forms of communication.

12. NATIONAL ANNUAL GENERAL MEETING

The National Executive Secretary shall arrange the date and venue for the Annual General Meeting of the Dolphin Class Association and notify all Association members, allowing 30 days notice.

13. AMENDMENTS a. Proposed amendments to the Constitution shall be dealt with at the

Annual General Meeting and adopted with the approval of a minimum of two thirds of the voting members present. Notice of proposed amendments is to be circulated simultaneously with notification of the AGM.

b. Proxy votes will be accepted on evidence of written authority. c. Proposed amendments to the Constitution shall be submitted for vote

of each Province : i. By direction of the National Executive Committee, or

ii. By direction of the National Executive Secretary, where a proposed amendment has been submitted by at least two Provincial Associations, each backed by the signatures of twenty voting members.

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THE DOLPHIN CLASS ASSOCIATION OF SOUTH AFRICA

R U L E S

(RATIFIED JUNE 1993)

Amended by AGM Resolution of April 2000

A. OBJECT

The Dolphin was devised as a simple, high performance, inexpensive, strictly one-design boat, where the test, when raced, is between crews, not boats and elaborate equipment.

B. FUNDAMENTAL RULE

The Dolphin shall be raced only with hull, equipment, fittings, spars, standing rigging, sails and running rigging, all manufactured in accordance with the standard Dolphin design and specifications. Any addition or alteration to the hull, equipment, placing of equipment, fittings, type of fittings, placing of fittings, spars, standing rigging, sails, battens and running rigging as supplied by the Builder is prohibited, except where such alteration or substitution is specifically authorised in these rules.

C. DEFINITION OF BUILDER Dolphin dinghies may be built and supplied only from certified hull and deck moulds and according to Dolphin specifications as approved by the National Executive Committee.

D. CHANGE OF RULES All rule changes must be agreed to by a two thirds majority of the members at the Annual General Meeting or Special General Meeting.

E. THE MEASUREMENTS The measurements shall be done in accordance with the measurements instructions of ISA and the Class Rules, Diagram’s and Schedules.

E1. MEASUREMENT DIAGRAMS The following measurement diagrams and schedules form part of these rules: DCA1 Hull DCA2 Spars DCA3 Sails DCA4 Foils DCA5 Mast Section DCA6 Emblem Schedules 1 to 3 The spars, sails battens, standing rigging, running rigging and the placing of fittings and equipment shall conform to the measurement diagrams. The measurement tolerances are intended to allow for necessary manufacturing tolerances only and shall not be used to alter the design.

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E2. MEASUREMENT DISPUTES In a case of measurement dispute concerning the hull, spars, sails, battens, rigging, type of fittings and equipment and their placing not explicitly covered by these rules and measurement diagrams, the following procedure shall be adopted : A random sample of 5 boats (excluding numbers 1 to 4 inclusive) shall be taken and measured using identical techniques. The dimensions of the disputed boat shall be equal to or within the maximum and minimum dimensions obtained from these 5 boats. If the boat in question is outside these dimensions, the matter, together with all relevant information, shall be referred to the Chief Measurer of the National Dolphin Class Association, who shall give the final ruling. Dimensions in the sample considered to be unusual shall be referred to the Chief Measurer.

E3. MEASURER Only an official Measurer appointed by the National Dolphin Association and SAS or the relevant National Sailing Association shall measure a boat, it's sails, spars and equipment and shall sign the declaration of measurement form stating that it conforms to Class Rules. A measurer shall not measure a boat, spar, sails or equipment owned or built by himself, or one in which he is an interested party or has a vested interest.

E4. MEASUREMENT FEE The Measurement Fee shall be determined by the National Dolphin Class Executive and adjusted periodically by them with due regard to fair administration.

E5. REGISTRATION NUMBER The Registration Number of each boat shall be hard-marked or engraved on the starboard upper surface of the thwart in clear numerals not less than 10mm high.

E6. SAIL NUMBER Sail numbers in solid black to be located between the second and third battens, and must comply with Rule 25 of the ISAF. A Dolphin may only race with a sail number which does not correspond with the hull when written notice of acceptance has been obtained from the Race Committee or Bridge.

E7. CLASS EMBLEM ON MAINSAIL

The Dolphin Emblem in solid black must conform to profile in DCA6 within 10mm and be affixed on each side and matched, positioned on the imaginary line bisecting the angle of the main sail luff/leech, with the top point 1700mm to 1900mm below the sail head.

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E8. SAILS

a. General i. Sails shall be measured in accordance with the Sail

measurement Instructions of the ISAF ii. Each sail shall be passed by an official measurer who will sign

and date it on the tack. iii. Sails shall be of Dacron or Polyester Mylar. iv. Minimum/Maximum weight of sail cloth shall be - Min 3,5 oz Max 4,5 oz. with the exception of reinforcing patches. v. Sails must conform to measurement diagram DCA3 vi. Only one set of sails comprising of one main and one jib may

be used per regatta unless a sail is irreparably damaged during a regatta. The sail replacement must be approved by the Race Committee.

b. Mainsail

i. The leech measurement shall not be greater than 6050mm. ii. The cross width measurement of the sail shall not exceed the

following: at quarter height - 2295mm at half height - 1850mm at three-quarter height - 1170mm

[Heights to be determined along the leech - see class drawing DCA3 and Schedule 3]

iii. The head of the Mainsail measured from the front of the luff rope to the leach of the sail shall not exceed 160mm.

iv The number of battens in the mainsail shall be four. The top batten shall not exceed 1000mm in length and shall extend to the mast. The distance of the top of the upper batten, as measured along the leech, from the head shall not be less than 1140mm. The bottom batten shall not exceed 700mm in length and shall nowhere be less than 800mm from the bottom edge of the footrope. The two intermediate battens shall not exceed 800mm in length. The battens shall not exceed 15mm in width.

v. No additional battens or other forms of stiffening are allowed in the mainsail other than reinforcing patches made of the same material to that of the sail. The longest dimension of any reinforcing patch shall be less than 700mm.

vi. One transparent panel may be fitted in the mainsail. It shall not exceed 0,28 m² in area, nor be less than 150mm from the edge of the sail. The window material must not extend more than 20mm outside the window opening.

vii. A double luffed or loose footed mainsail is prohibited. The length of the foot bolt rope shall not be less than 2000mm.

c. Foresail The foresail shall be a three cornered sail. The leech shall be a straight line or concave curve. Only one eye or ring is permitted in the vicinity of the clew. i. The following dimensions shall not be exceeded

luff 4410mm leach 4250mm foot 1600mm width at head 30mm

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ii. Lay out the sail on a flat surface. Scribe a straight line from the tack to the clew. No part of the

foot may extend beyond a distance of 150mm below this line beyond points 300mm either side of the midpoint of the foot. In addition, fold the tack to the clew. At no place shall the overlap of the folded portions of the sail exceed 12mm.

iii. No battens or other form of stiffening are allowed in the foresail other than reinforcing patches made of the same material to that of the sail. The longest dimension of any reinforcing patch shall be less than 700mm.

iv. One transparent panel may be fitted to the foresail. It shall not exceed 0,28m² in area, nor be less than 150mm from any edge of the sail. The window material must not extend more than 20mm outside the window opening.

The luff of the foresail shall not enclose the forestay.

E9. HULL & DECK Proposed changes; approved April 2006

The hull and deck shall be manufactured in GRP with wooden or GRP centerboard casing top and

thwart, to the builder’s standard template/mould.

The Hull and Deck shall be manufactured in GRP with a wooden thwart, to the builder's standard template. A wooden centreboard casing top may be substituted for the GRP version to the dimensions contained in DCA1: Hull. No holes may be cut in the hull, deck or bulkheads in addition to the inspection ports except for the purpose of fixing permissible fittings, which holes must be permanently sealed with a sealant. One drainage point fitting only will be permitted per buoyancy tank. Minimum hull weight shall be 80kg. Included should be all permanent fittings [hatch covers, jib track and fairleads, toe-straps, mainsheet block and centreboard] but excluding all sheets, lines and rigging, and rudder assembly. Any correction masses should be permanently fixed to the underside of the thwart. Before the mass of the hull is determined, it must be confirmed that no water or any other equipment is present in any of the compartments of the hull. a. i. The jib attachment point from the forward most point of the bow

measured along the deck shall be:- minimum of 250mm maximum of 270mm ii. The side-stay attachment point from the jib attachment point shall

be:- minimum of 1765mm maximum of 1785mm b. The centre board pivot shall conform to the measurements contained

in DCA1 and be measured by template as contained in DCA7. c. The centreboard casing and thwart shall conform to DCA1 and the

following :- (i)Depth of casing top minimum : 16mm maximum : 21mm

(ii) Width of casing top- minimum : 155mm maximum : 165mm (iii) Thwart width- minimum : 90mm maximum : 110mm

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(iv) Thickness of thwart minimum : 15mm maximum: 20mm (v) Height of thwart above case top:-

minimum : 80mm maximum : 100mm (vi) The forward face of the thwart measured from the forward most

point of the centreboard casing slot, shall be:- minimum : 850mm maximum : 870mm d The mast step shall be positioned as detailed in DCA1 and shall be

measured by the template contained in DCA7.

E10. MAST & BOOM The mast and boom must conform in all respects with Measurement Diagrams DCA2 and DCA5 and Schedule 2. The mast shall be tapered above the side stay entry point with the welding on the sides of the mast only and not be cut in any other positions.

a Mast i Depth of the mast tenon shall not exceed 20mm. ii The measurement of the whisker pole attachment point from the lower

face of the mast tenon plug shall be : minimum : 685mm

maximum : 715mm iii The measurement of the centre of the gooseneck pin from the lower face

of the mast tenon plug shall be:- minimum : 805mm maximum : 835mm iv The measurement of the middle of the spreaders from the lower face of

the mast tenon plug shall be:- minimum : 2685mm maximum : 2715mm v The measurement of the centre of the jib halyard sheave from the lower

face of the mast tenon plug shall not exceed a maximum of 4790mm. vi The measurement of the side stay attachment point to the mast, from the

lower face of the mast tenon plug shall be:- minimum : 4810mm maximum :4850mm. vii The measurement of the bottom edge of the black band from the centre

of the gooseneck fitting shall:- not exceed : 5680mm. viii The maximum length of the mast from the lower face of the mast tenon

plug to the centre of the main halyard sheave shall:- not exceed : 6600mm. ix The measurement of the upper most point of the kicker attachment from

the lower face of the mast tenon plug shall:- not exceed :100mm. x The circumference at the top of the mast shall:- not be less than : 120mm.

b Spreaders The spreaders must be fixed, not able to rotate and dimensioned as follows :- The length of the spreader measured from the centre line of the mast to the

inner edge of the side stay shall be:- minimum : 380mm

maximum : 400mm.

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c Boom The Boom section shall be a standard dinghy mast section with integral track.

The boom shall be measured attached to the mast and the dimensions shall conform to the following:- i The attachment point of the kicker on the kicker hanger from the aft face

of the mast shall be:- minimum of 635mm maximum of 665mm ii The attachment point of the mainsheet hanger from the aft face of the

mast shall:- not exceed maximum 1525mm iii The measurement of the inner edge of the black band from the aft face of

the mast shall:- not exceed 2500mm. iv The overall length of the boom as measured from the aft face of the mast

shall:- not exceed 2635mm.

d. General i The clew outhaul and adjustment must be positioned on the boom. An

internal or external purchase system is permitted. No muscle boxes or highfield lever systems are permitted.

ii The gooseneck must be permanently fixed. iii. Mast section as specified. No permanent bend, stiffening or mast

rotation permitted. iv. Mast rake shall not be altered whilst racing. v. Mast Bands:

The mast shall carry one painted band of a colour strongly contrasting with the colour of the mast. It shall not be less than 10mm in width. The lower edge of the upper band shall not be more than 5680mm above the centre of the gooseneck. When racing, no part of the mainsail shall extend above the lower edge of this band.

vi. Boom Bands: The boom shall carry a painted band of a colour strongly contrasting with

the colour of the boom. The band shall not be less than 10mm wide. With the boom fitted on the gooseneck and at right angles to the mast,

the distance between the downward projection of the aft edge of the mast, disregarding local projections or cut outs, and the forward edge of the band shall not exceed 2500mm. When racing, no part of the mainsail shall extend aft of the forward edge of this band.

E11. JIB STICK (WHISKER POLE) a. Must be unsinkable and length to conform with Measurement

Diagram DCA 2. b. A jib stick placed on board at the start of the race must remain on

board until the end of the race. If lost overboard it must be picked up immediately before continuing the race.

c. The maximum overall length of the whisker pole including all fittings shall:-

not exceed 1700mm

E12. TOE STRAPS Toe straps must be fitted for the helmsman and crew, but may be arranged as required.

E13. HULL COATINGS The use of slowly soluble applicants, which alter the characteristics of the boundary layer of the hull, are prohibited.

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The hull and deck may be painted. Sanding of the hull to lighten the mass, alter shape or characteristics is not permitted except in affording a key for painting.

E14. SHEETS, LINES & WIRE RIGGING a. Any sheets and lines as supplied by the builder may be substituted

with sheets or lines of any length of material except that sheets and lines in whole or in part of wire are prohibited unless supplied by the builder as such. Sheets and lines of aramid fibre or similar material are prohibited and each sheet or line shall be one continuous length of uniform section.

b. The length and gauge of all wire rigging is unrestricted. c. The mainsheet may have as many purchases as required.

E15. MAINSHEET BLOCK The mainsheet block/blocks shall be attached at the aft end of the centreboard casing and may be of the snubbing or ratchet type, depending on personal preference. No hoop or traveller is permitted.

E16. KICKING STRAP A kicking strap must be fitted and attached at the specified anchor points on the mast heel and boom and may not be led aft for adjustment.

E17. JIB CUNNINGHAM A jib cunningham is not permitted.

E18. JIB FURLING A jib furling mechanism is not permitted.

E19. JIB FAIRLEAD & TRACK a. Centre of Jib fairlead track shall be 1700mm (+ 5mm) from the jib attachment. b. Distance apart:

i. The centre point of the jib fairlead track shall be 920mm (+ 5mm) at the forward edge of the track.

ii. The centre point of the jib fairlead track shall be 980mm (+

5mm)) at the aft edge of the track.

E20. CENTREBOARD The centreboard shall float, have a fixed profile according to DCA4 and pivot on an axis positioned within the limits specified in DCA1. A centreboard uphaul/downhaul is permitted. A gybing centreboard is not permitted. The centreboard shall be measured using a template constructed in accordance with the Class Diagram DCA4 - maximum thickness 22mm In addition:- The centreboard can be measured in situ using a modified template (as envisaged above) that extends from the hull line with the centreboard fully extended.

E21. RUDDER BLADE The entire rudder assembly ( rudder blade, tail stock and tiller extension) shall float.

The rudder blade shall float, have a fixed profile according to DCA4 and pivot. The blade thickness shall not exceed 22mm. The rudder uphaul/downhaul may be arranged as required. Fixed rudder and tail stock is not permitted.

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E22. RUDDER TAILSTOCK

Approved ammendments; APRIL 2006

The tail stock shall be made of wood or aluminium. A retaining device shall be provided to secure the

rudder on it’s pintles.

The tailstock shall be made of wood or aluminium. A retaining device shall be provided to secure the rudder on it's pintles.

E23. TILLER EXTENSION A tiller extension may be fitted as required.

E24. INSPECTION PORTS, HATCH COVER A minimum of five inspection ports will be allowed. The ports must be closed while racing.

E25. WIND INDICATORS Wind indicators may be attached, as required, to sails, mast and rigging.

E26. COCKPIT LAYOUT The cockpit layout must conform with the dimensions and limits of Measurement Diagram DCA1.

E27. FORESTAY & SIDE STAY ANCHORS The forestay/ jib tack and side stay anchor fittings must be fitted in accordance with the dimensions of Measurement Diagram DCA1.

E28. FORESTAY & SIDE STAY ADJUSTMENT Adjustment shall be limited to the repositioning of the locking pins only to adjust mast rake. Highfield levers are not permitted on the side stays and no adjustment of the side stays is permitted while sailing.

E29. CENTREBOARD GASKET A centreboard gasket may be fitted to the underside of the centreboard slot.

E30. SELF-BAILERS A maximum of two self-bailers may be fitted, maximum bailer size Elvstrom Super Medium or equivalent.

E31. BARBER HAULERS No barber haulers are permitted.

E32. TRAPEZE No trapeze is permitted.

E33. SPINNAKER No spinnaker is permitted.

E34. COMPASS One compass may be fitted when permitted in Racing Instructions.

E35. CLOTHING & EQUIPMENT The total weight of clothing and equipment worn or carried by a competitor, including any buoyancy apparatus shall not exceed 10 kg. when wet. To test this, all clothing carried by the competitor shall be thoroughly soaked by

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submerging in water, and shall then be suspended to permit ready draining and allowed to drain for one minute, at the end of which period the weight shall be recorded. Pockets or compartments designed to hold water as ballast in items worn or carried by the competitor are prohibited.

E36. CREW A minimum of two persons shall race a Dolphin. The number of crew shall be maintained throughout a race and series. The helmsman may not be changed during a race and series and the crew, other than the helmsman may be changed once only during a series by requesting permission from the Race Committee in writing.

E37. MEMBERSHIP OF DOLPHIN CLASS ASSOCIATION For National Championships both the Helmsman and the Crew must be members of the Dolphin Class Association and members of a Club affiliated to South African Sailing. For Provincial Championships the Helmsman must be a member of the Dolphin Class Association and both the Helmsman and Crew must be members of a Club affiliated to South African Sailing.

RESCINDED AT THE agm OF 2000

To participate in Club, Provincial or National competition the Owner of the Dolphin must be a paid up member of the Dolphin Class

Association and the Dolphin must have a current valid measurement certificate.

E38. NON-CONFORMING YACHTS Non-conforming yachts may be issued with a measurement certificate at the discretion of the Executive Committee of the National Class Association.

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DDCCAA11:: HHuullll AAuuttooCCAADD LLTT:: ddoollddccaa11..ddwwgg

AA..EE..RRooffffee 2255 FFeebbrruuaarryy 22000033

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DDCCAA22:: SSppaarrss AutoCAD LT:doldca2.dwg A.E.Roffe 23 March 2002

NNOOTTEESS:: CCiirrccuummffeerreennccee ooff mmaasstt ttoopp –– 112200mmmm mmiimmiimmuumm

MMaasstt –– SSuullllyy SSeeccttiioonn

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DDCCAA33:: SSaaiillss AutoCAD LT:doldca3.dwg [part]

AA..EE..RRooffffee 2244 JJuunnee 22000022

AAllll DDiimmeennssiioonnss iinncclluuddee BBoolltt RRooppee wwhheerree aapppplliiccaabbllee

TToopp BBaatttteenn :: 11 000000mmmm MMaaxx

MMiiddddllee BBaatttteennss :: 880000mmmm MMaaxx

BBoottttoomm BBaatttteenn :: 770000mmmm MMaaxx

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DCA4: Foils AutoCAD LT: doldca4.dwg A.E.Roffe 26 January, 2012

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DCA5: Mast Section and Spreaders AutoCAD LT: doldca2.dwg

A.E.Roffe 4 March 1997

Material Alum Alloy 6261 - TF

Cross Sectional Area 442.74 Sq mm

Mass 1.203 Kg/m

Length of Section 7m +/- 50mm

Twist 1 Deg/m Max

Straightness 4mm/m Max

Thickness Tolerance +/- 0.3mm Max

Spreaders

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DCA6: Emblem AutoCAD LT:doldca3[part]

A.E.Roffe 6 March 1997

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DCA7 : Templates To locate Centreboard Pivot Point and the Mast Step Aft Limit

autoCAD LT: doldca7.dwg

AERoffe 4 February 1999.

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DOLPHIN MEASUREMENT FORM

SCHEDULE 1 : HULL AND DECK

Sail Number : …………………….. Hull Colour : ……………………..

Builder : …………………….. Deck Colour : ……………………..

Item Description Rule Min Actual Max

1 Height of registration number on thwart 5 10 -

2 Fore

Jib Fairleads distance apart

After

19(b)

915

975

925

985

3 Centreboard pivot above outside of hull 9(b) 60 80

4 Centreboard pivot aft of inside of case 9(b) 90 110

5 Width of centreboard case top 9(c)(ii) 155 165

6 Thickness of centreboard case top 9(c)(i) 16 22

7 Thickness of thwart 9(c)(i) 16 22

8 Mast step from forward bulkhead to after of mast step 9(d) - 160

9 Thwart aft of inside of case 9(c)(v) 850 870

10 Thwart above centreboard case top 9(c)(iv) 80 100

11 Thwart width 9(c)(iii) 90 110

12 Jib attachment from bow 9(a)(i) 250 270

13 Jib farlead track from jib attachment 19(a) 1695 1705

14 Side stay attachment from jib attachment 9(a)(ii) 1765 1785

DATE MEASURED : …………………………….

MEASURED BY : …………………………….

SIGNATURE : …………………………….

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SCHEDULE 2 : MAST, BOOM, FOILS AND WHISKER POLE

Sail Number : ……………………..


1 Mast profile (Conform- Yes/No) 10

2 Mast taper (Conform- Yes/No) 10

3 Mast tenon 10(a)(i) 20

4 Whisker pole attachment above plug 10(a)(ii) 685 715

5 Gosseneck above plug 10(a)(iii) 805 835

6 Spreaders above plug 10(a)(iv) 2685 2715

7 Jib Sheave above plug 10(a)(v) 4790

8 Attachment point of side stays above plug 10(g)(vi) 4810 4850

9 Mast black band measurement 10(a)(viii) 5680

11 Overall length of mast 10(a)(vii) 6600

12 Kicker attachment on mast 10(a)(ix)

13 Circumference at top of mast 10(a)(x) 120

14 Length of spreaders 10(b)(a) 380 400

15 Kicker Attachment on boom 10(c)(i) 635 665

16 Mainsheet Hanger/s 10(c)(ii) 1525

17 Boom black band measurement 10(c)(iii) 2500

18 Overall length of boom 10(c)(iv) 2635

19 Whisker pole length 11(c) 1700

20 Centreboard profile (conforms, YES/NO) 20

21 Centreboard thickness 20 22

22 Rudder blade profile (conforms, YES/NO) 21

23 Rudder blade thickness 21 22


MEASURED BY : …………………………….

SIGNATURE : …………………………….

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SCHEDULE 3 : SAILS

Sail Number : …………………….. Sail Maker : ……………………..

Sail Material : ……………………..


1 Main sail window area (if fitted) m2 8(b)(v) 0.28

2 Main sail window from edge of sail 8(b)(v) 150

3 Main sail leech 8(b)(i) 6050

4 Main sail half height width 8(b)(ii) 1850

5 Main sail three-quarter height width 8(b)(ii) 1170

6 Mainsail quarter height width 8(b)(ii) 2295

11 Top batten length 8(b)(iv) 1000

12 Distance top batten from head 8(b)(iv) 1140

13 Middle Battens 8(b)(iv) 800

14 Lower Batten 8(b)(iv) 700

15 Lower Batten from foot rope 8(b)(iv) 800

17 Batten width 8(b)(iv) 15

18 Headboard 8(b)(iii) 160

19 Foot bolt rope 8(b)(iii) 2000

20 Jib luff 8(c)(i) 4410

21 Jib leech 8(c)(i) 4250

22 Jib foot 8(c)(i) 1600

23 Jib width at head 8(c)(i) 30

24 Jib foot roach (see sketch DCA 3) 8(c)(ii) 150

25 Jib window area m2 8(c)(iv) 0.28

26 Jib window from edge of sail 8(c)(iv) 150


MEASURED BY : ………………… SIGNATURE : ……………………….

DOLPHIN CLASS ASSOCIATION HANDBOOK … · Dolphin Handbook 15/03/2006.DOC 15/03/2006 DOLPHIN DESIGN...

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Transcript of DOLPHIN CLASS ASSOCIATION HANDBOOK … · Dolphin Handbook 15/03/2006.DOC 15/03/2006 DOLPHIN DESIGN...