ARNIS MANGOLDS C-2I, INC. SHREWSBURY, MA, USA...ARNIS MANGOLDS C-2I, INC. SHREWSBURY, MA, USA...

Looking up – multi-

parameter bathymetry via an

amphibious,

autonomous bottom

crawler

ARNIS MANGOLDS

C-2I, INC.

SHREWSBURY, MA, USA

[email protected]

978-257-4820

mailto:[email protected]



• Autonomous

• RF real time control option

• 10-20 mile range (UW)

• Amphibious

• 300-ft depth

• Configurable payload space

• Low

• profile

• ground pressure

• EM signature

• 100-day station keep

Bottom crawlers: Enabling technology

Sea Otter

• 36” x 24” x 10 “

• ~125-lbs

• On-deck payload 80-lbs

• 48” x 48” x 12 “

• ~250-lbs

• 850-lb on board payload • 800-lb drawbar

• 2 man lift • 55-lb max component

weight

• No tool assembly

Sea Ox

So what?

Provides a point of absolute

stability

Touches the ground

Independent of current

Can measure surface

roughness, density

Tides – no corrections

Sensor agnostic

Plenty of space for as many

sensors as can be fit

Can do work

Penetrate, sample, core

Navigation

• FOG

• AHRS

• Encoders

• GPS/RTK

• Pressure

• External aiding

259800

260000

260200

949550 949560 949570 949580 949590 949600 949610 949620 949630

Easting_Northing

Otter Y

259800

260000

260200

949610 949620 949630 949640 949650 949660 949670 949680 949690 949700 949710

Easting_Northing

RTK Survey Points SeaOtter.001

X-Y comparison with RTK

(Ship Island)

• 100Hz

• 0.2 cm

• 35 manual

vs 1500

vehicle pts

• .004” over

vehicle length

Gradient vs RTK

Back-up Bathymetry

measurements

Pressure

10hz

0.4-in

ADCP

RTK

Track sinkage

Trailer • Non-metallic

• Flex-EMI (by WRT)

• 5.5 x 2 x .5-ft:

• ~ 65-lbs, 5-ft tow bar

• 4-in coil to ground

clearance

• Field switchable tracks, skid,

wheels

Sample Playloads

Eel grass survey

Pond health

Fresh water

intrusion

Why of Interest?

Nearly sea state independent

Can do work

Penetrometers, coring

Sink gauge

Shear vanes

Caisson

Consumes no power for station keeping

Cross-diurnal/tidal cycles

Long term monitoring

No artificial boundaries

Crosses deep water, surf zone, soft ground, beach

Can multi-task

Coincident data

More of it

Low cost

Arnis Mangolds

[email protected]

978-257-4820




ARNIS MANGOLDS C-2I, INC. SHREWSBURY, MA, USA...ARNIS MANGOLDS C-2I, INC. SHREWSBURY, MA, USA...

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