News and Media
Jensen’s Proven Workboat Design Selected for NAVSEA New-Build
01/08/2018 09:40 am
Jensen Maritime Consultants , a Crowley company, announced today that one of its proven workboat designs will be used by a Pacific Northwest boat builder to fulfill a construction project for the Naval Sea Systems Command (NAVSEA). In support of the project, Jensen will supply a functional and regulatory design package for the 41-foot vessel, which will provide ship- and sub-assist services, as well as other port operational services at U.S. Navy port locations around the world.
“We are proud to have our highly functional, safe and efficient design selected for this new series of workboats,” said Jensen’s Bryan Nichols, director, business development. “We have worked closely with the build team to ensure maximum efficiency for vessel construction. Once completed, it will be a well-equipped, very maneuverable workhorse.”
The U.S. Navy will use the 22,000-pound bollard-pull workboat in locations around the world to primarily assist barges, submarines, and other naval vessels; open and close security barriers; and tow or push floating port operations support equipment. To support these missions, Jensen designed the vessel to include two Pullmaster hydraulic deck winches for use in multiple mooring configurations and heavy-duty fendering to offer optimal protection when performing such work. The push knees are also radiused toward the top for use when pushing against vessels with flare.
Unique to the workboat, which has a beam of 16 feet, 7 inches, is a removable cabin and push knees, which allow it to be transported over-the-road by truck. The propulsion system consists of ZF W325 marine gears and inboard diesel engines, Twin Cummins QSM11-455, which offer 450 BHP at 2,100 RPM.
Additionally, Jensen added highly functional features to the design, such as an H-bitt on the bow, mooring bitts at the shoulders and stern quarters, and an aft taffrail for a smooth sweep of the tow hawser while towing astern. The workboat also has a 500-pound capacity lifting davit that can be mounted in three different locations on the stern, kort nozzles and flanking rudders to improve steering when operating in reverse, and skegs for directional stability while underway and structural support to facilitate drydockings and transport.
Finally, the workboat offers a complete HVAC system and a 3,100-pound total payload, including up to five crewmembers, additional mission gear and cargo, and a six-person life raft. The boat has been designed to American Boat and Yacht Council (ABYC) standards and meets the U.S. Navy’s stability requirements, including damage stability.
Delivery is expected in fall of 2018.
Seattle-based Jensen Maritime Consultants, Inc., is a naval architecture and marine engineering firm owned by Crowley Maritime Corporation . The company offers a diverse range of consulting, design and engineering services developed from more than 50 years of experience working around the world. Jensen is a recognized leader in the design of all types of vessels - particularly workboats, fishing boats and fireboats – and has built a favorable reputation on a long history of successful designs and conversions with close attention to engineering basics. The company's services include detail and conceptual design and engineering, lofting, regulatory and shipyard liaison as well as on-site consulting services and on-location assistance anywhere in the world. Additional information about Jensen can be found at www.jensenmaritime.com .
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