Delaware Bay Shipbuilding lays the keel of the number one hull
Posted On June 27, 2021
June 22, 2021
Delaware Bay Shipbuilding Co., Leesburg, NJ, began construction of Vessel Number One, a 45’x15’6 “aluminum work / rescue vessel. Shipyard owners Mike Tilsner and Eric Berg are over 25 years old. combined experience building large aluminum ships in New Jersey for a ferry manufacturer.
The design of the boat was a collaboration between Mike LeMole of LeMole NavalArchitecture, Vineland, NJ, and boat designer Steve Pollard of Specmar Inc., Scapoose, Ore.
Together with the client, LeMole provided the general arrangement, basic design specifications, frame sizing, stability calculations, weight and balance data. Specmar took the information from LeMole and 3D lifted the entire ship. The digital files were then sent to Bayou Metal Supply, New Iberia, Louisiana, where every piece was CNC routed, labeled and cut to size in nests as large at 24’x8 ‘.
Construction started this month and the project is well advanced. The entire vessel is constructed from 5086-H116 aluminum. The bottom plate is 5/16 “, the frames are ¼” and the longitudinal members are 3/8 “. The material of the house is 3/16”.
The vessel is welded with Miller AlumaFeed 350 XR-Aluma-Pro push-pull system for pulsed MIG welding. The “suitcase” design allows welders freedom of movement. The pulsed MIG system gives welds the appearance of TIG.
The main propulsion will come from the twin cylinder Cummins QSM-11 V-drive diesel engines – 670 hp each – equipped with ZF marine gears.
The vessel’s operating power will be provided by a Cummins Onan generator set, producing 17 kW of electrical power. In addition, the new boat will be equipped with a complete hydraulic system with Diving air compressor, Marine lighthouse IT, AJR Marine the Windows, Garmin electronics, and Llebroc seats.
“The engineering and the thinking behind the design make it very fast to build,” Tilsner said in a statement announcing the construction. “It’s like putting together a huge model, where every part is labeled and cut to size. This is a huge victory for our client in terms of labor savings and material use at a time when aluminum prices are skyrocketing ”.
“The 3D model allows us to pre-plan all the system configurations. The open mechanical spaces will make it easier to install the wiring and hydraulics, ”said Berg. “Prefabricated beds for Cummins engines and Guardian of the Sea will also save time and achieve a top notch installation. This type of construction corresponds to the core values of Delaware Bay Shipbuilding Co. with customer experience and build quality as a priority ”
Naval architect LeMole collaborated with Specmar in the final loft. “Working with Specmar allowed me to focus on critical design elements and technical details,” said LeMole. “By delegating the lofting and 3D nesting to the Specmar team, we see an efficient and well-designed solution for our client.”