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Elliott Bay Design Group

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5305 Shilshole Avenue NW #100
Seattle , WA 98107
United States
Booth #2235

Elliott Bay Design Group

Elliott Bay Design Group (EBDG) is a full-service, employee-owned naval architecture and marine engineering firm that supports owners, operators and shipyards in the US and abroad. Since our inception, we have established ourselves as a responsive, reliable and innovative company that harmonizes construction and operations through design.

Products & Services


270' PSV Design

270' PSV DesignEBDG's 270' Platform Supply Vessel is a versatile, modern design suited to the needs of both vessel operators and shipyards. Based on proven design characteristics, but enlarged for greater capacities required in deep-water operations, the vessel provides an economical solution for a large PSV.

Barge Design & Production Support

Barge Design & Production SupportEBDG has extensive experience with design and construction support of tank barges ranging in size from 2,300-BBL to 330,000-BBLs. We provide contract design and construction support services for all of our barge designs.

4500 Ollis Class Ferry Design for Staten Island Ferries

4500 Ollis Class Ferry Design for Staten Island FerriesIn 2014, EBDG was selected to design a new class of ferriesfollowing the successful completion of its multi-phase preliminary designinvestigation of the Staten Island Ferries' fleet.  The new vessels, currently under constructionat Eastern Shipbuilding in Panama City, Florida, are the 4500 Ollis Class.  Three vessels are contracted to be built tothis design. EBDG's scope of services forthis project included the total design and construction support for the new andmodified Staten Island ferries, encompassing contract design, bid support,construction oversight services and delivery support.  


M/V STEILACOOM IIEBDG's success with the design of Pierce County's M/V CHRISTINE ANDERSON led to a request for a second similarly designed vessel. The new 216', double-ended ferry, with a 54-vehicle capacity and a transit speed of 13 knots, replaces the County's aging Steilacoom ferry, built in 1936.

MPF Landing Craft

MPF Landing CraftEBDG provided production support detail drawings for Kvichak Marine Industries' design of 10 MPF utility boats for the US Navy. The 40' long, high-speed landing craft are replacing the Navy's existing LCM-8 craft.

New Sound Class Ferries

New Sound Class FerriesEBDG designed this passenger/vehicle New Sound Class ferry for North Carolina DOT. With a capacity for 300 passengers and 50 vehicles, the 200', single-ended vessel will service the 2-hour Cedar Island to Ocracoke Island and the Swan Quarter to Ocracoke runs in North Carolina's Pamlico Sound. Two vessels have been built to this design.

ONGC Deep Well Stimulation Vessel Design

ONGC Deep Well Stimulation Vessel DesignEBDG provided consultancy to ONGC of India for the design, construction and delivery of this 114m x 19m x 9.25m well stimulation vessel, which will operate in open ocean environments, primarily in the Arabian Sea offshore India.

Texas DOT Diesel-Electric Ferries

Texas DOT Diesel-Electric FerriesEBDG provided contract design, bid support and construction liaison to Texas DOT for a diesel-electric version of their 28-car passenger/vehicle ferry.  The ferry has an overall length of 160', a beam of 52', a depth of approximately 11' and a draft of 8'.  The vessel is ADA-compliant and built to ABS class for service on intra-coastal waters.  Three vessels of this design are currently under construction in Texas and EBDG is providing vessel oversight services.

Tug Designs

Tug DesignsEBDG and its predecessor firm, Nickum & Spaulding Associates, have designed over 50 tugboats, ranging from small harbor tugs & SDMs to large deep-sea salvage tugs. Propulsion systems include conventional fixed-pitch propellers, Voith-Schneider units and Kort nozzles with flanking rudders.

83,000 BBL ATB Clean Tank Barge - Contract Design

83,000 BBL ATB Clean Tank Barge - Contract DesignEBDG completed the contract design for an 83,000 barrel ATB clean tank barge, complete with technical specifications and a CFD flow analysis.  The 83,000-bbl barge includes a vapor recovery system with option for cargo heating and tank inerting, and a forward breakwater that protects the anchor and mooring winches.  Three vessels have been built to this design.  In follow up to this project, EBDG provided updated structural designs, modified with a new hull shape.  Three additional vessels were built to this design.  EBDG provided production support and lofting for the multiple shipyards that constructed the six vessels.

Naval Architects / Marine Engineers

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  • Consulting
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