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AIS has a full fleet of dredging and marine construction equipment and the experienced personnel it takes to do the job right.
AIS started out in marine construction working on docks, piers, seawalls and groins. Over the years we have expanded our capabilities to include hydraulic and mechanical dredging and pile driving. We also have a fleet of support vessels and equipment, plus a full fabrication shop that can build custom attachments to meet any need.
Our fleet includes two all-electric hydraulic dredges, La Encina and the Santa Barbara, and the mechanical dredge, Myrtle Irene.
The La Encina
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La Encina
LOA 82', beam 28', draft 4'
Power 4160v AC
1250 pump hp, 2,200 total hp
Current depth capability 40'
18-inch discharge line
54' anchor handler, barge and tender
GPS navigation/location
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The Corrin
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The Corrin
LOA 70', beam 20',
draft 1.5'
Power 4160v AC
Variable DC pump 900 hp,
1800 total hp
Walking spud
Current depth capability 30'
Modular construction, truckable
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In addition to our hydraulic dredges, our marine support equipment includes:
modular barges
hydraulic excavators
crane and clamshell
modernized LCM-6 landing craft
500 hp push boat
tenders and crew boats
We add to our fleet every year, improving our ability to complete your project on-time and on-budget.
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March, 2011: AIS is actively dredging the seaplane channel at Alameda Point. See for the details and a video.
The Myrtle Irene Mechanical Dredger:
LOA 135' — Beam 42' — Draft 4'
7 3/4 yard bucket — 50-foot maximum dig depth — 586 hp Liebherr — P984 Litronic excavator.
The Myrtle Irene can also be fitted with special-purpose buckets, tongs, rotary head, etc.
AIS offers coastal marine, harbor and lake construction services, including:
Suction or mechanical dredging
Pier and quay construction, rehabilitation and repair
Seawalls and groins
Difficult-access work.
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