Introducing the new Diesel Work Sport 6.0

The DWS at cruising speed.
The DWS 6.0 at cruising speed.

Baltimore, MD (November 19, 2020)— Introducing the Diesel Work Sport 6.0 (DWS 6.0), a high-speed aluminum commercial and recreational boat.  Incorporating responsive handling, sporty performance, and efficient diesel propulsion, the DWS 6.0 makes the most of technology to provide owners with control, luxury, and accessibility.

After a tweet from Volvo-Penta advertising our integration of their Volvo D3 Diesel Engine for MAPC’s diesel powered very small unmanned surface vessel, Inboard Diesel Service of Martinique commissioned Maritime Applied Physics Corporation (MAPC) to build a new boat ultimately designed for the yacht tender market. The diesel power provides safe, convenient refueling from a yacht’s main tankage as well as significantly improved fuel economy for increased operating range.

Optimized to assist Inboard Diesel with waterborne service of yachts in the eastern Caribbean, the DWS 6.0 comes with a standard payload capacity of 5 persons or 1000 lbs.  The innovative hull design provides a smooth ride with enhanced maneuverability and stability, capable of handling open ocean seas. The spacious cockpit comes with ergonomic Air-Shock Mitigating seating from Zodiac MilPro with up to 9 inches of travel to soak up wave impacts while running at high speed. 

Storage is plentiful in this 6m design, with about 130 quarts capacity beneath the two-seat bench. A custom fabricated aluminum arch and soft-top sunshade provides full shade for the operator and can extend aft to provide shade for passengers.

The deck treatment from SeaDek is installed on all walking surfaces, the gunwales, and the swim platform.  A range of color, texture, and pattern options are available. 

The boat is outfitted with a full complement of integrated electronics including Volvo’s Glass Cockpit display with chartplotter, engine data, depth sounder, and audio entertainment controls. A VHF radio and AIS transponder are also integrated into the electronics suite for safety and communication with other vessels. 

Frank Agren, owner of Inboard Diesel Service and long-time Martinique resident, had this to say about his new boat: “DWS 6.0 is the best suited vessel to visit customers on remote moorings in the service area, designed through the research of seaworthiness and unhindered driver vision. Sea trials have been very promising so far, confirming the quality and performance added by VP engines.”  Inboard Diesel will take possession of the vessel within the next month. 

About Inboard Diesel: IDS provides high-quality service in repair, maintenance, and installation of marine diesel engines, specializing in Volvo Penta, MTU, and Northern Lights equipment. Facilities in Martinique, located in Le Marin and Case-Pilote, provide support for marine leisure, yachting, passenger transport, and industry spanning the Caribbean. More information is available at

About MAPC: Headquartered in Baltimore, MD with offices in Brunswick, Maine, MAPC is an employee-owned industry-leading manufacturer of high-speed naval platforms and unmanned surface vessels.  Learn more by emailing us at:

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MAPC partners with Project Liberty Ship to Restore Historic Pier

We have always felt inspired and strongly connected to the historical shipbuilding site on which our facility currently stands. MAPC, with a mission to provide the latest technology to the Navy fleet, is proud to partner with Project Liberty Ship in bringing the SS. John W. Brown to our pier! See joint Press Release below:

Baltimore, Dec. 30 – Project Liberty Ship Inc., owner and operator of the World War II museum ship SS JOHN W. BROWN, and Maritime Applied Physics Corp. (MAPC) today announced an $18 million plan to revitalize a portion of the former Bethlehem Steel Fairfield Shipyard and provide a home base for the ship’s education and cruise activities as well as support for MAPC’s growing shipbuilding and maritime technology operations.

The proposal would utilize federal and state funding, augmented by corporate and individual donations, to rebuild a fitting-out pier at the former yard in South Baltimore. The pier would be owned and administered by a non-profit entity.

Project Liberty Ship (PLS) is a 501 (c) 3 organization dedicated to the preservation and continued operation of the JOHN W. BROWN as a memorial to the vital wartime role of the U.S. Merchant Marine, U.S. Navy Armed Guard, and American shipbuilding personnel, three groups instrumental to victory in World War II as well as world-wide sealift operations in support of U.S. national security interests ever since. Its aim is to honor the legacy of all veterans.

The ship, a familiar sight on Baltimore’s Canton waterfront since it returned to the city in 1988, was launched at the Bethlehem-Fairfield shipyard on Labor Day in 1942. Since restoration began, it has sailed more than 25,000 miles, visiting 29 North American ports with its trademark “living history” cruises that feature 1940s-era entertainment and fly-bys from vintage aircraft.

The JOHN W. BROWN is one of only two operating Liberty Ships remaining out of a total of 2,710 built nationwide during WWII. Converted during the war to a partial troop transport, the vessel is the only remaining troop transport which landed combat forces on an invasion beach. Named after a shipbuilding labor leader, it is listed in the National Register of Historic Places, which designates sites and objects worthy of preservation in America.

MAPC designs and builds advanced technology systems and vessels for the Defense Department, as well as commercial products, such as the new Baltimore water taxis and floating aquaculture systems. It owns and has a plant on the land where the Bethlehem-Fairfield yard was located in the 1940’s. MAPC currently holds a 50-year lease, with an option to purchase the 780-foot pier that needs to be replaced to accommodate the JOHN W. BROWN and the expansion of MAPC’s business.

MAPC company has two workforce development partnerships in Baltimore and an active apprenticeship program with the state of Maryland. It employs welders, electronic technicians, machinists, engineers and naval architects.

Both PLS and MAPC see the innovative plan to restore pier space on the footprint of the historic fitting-out pier, one of the few remaining WWII era shipyard structures as a means of keeping Baltimore’s maritime heritage alive and promoting economic development of the port.

“By co-locating with MAPC, the reconstructed pier would promote growth in South Baltimore,” said Michael Barnes. “The presence of the JOHN W. BROWN in Fairfield, near Fort McHenry, would contribute to Baltimore’s tourism industry and enhance public knowledge of the importance of the port, which isn’t fully appreciated. It would also allow the ship to expand its numerous training programs with youth groups and maritime industry organizations.”

Barnes also pointed out that the implementing the plan is expected to take about two years and that the ship is working on interim dockage until the Fairfield pier is ready.

Mark Rice, President of MAPC noted, “The photographs on the walls of our present building remind us daily of the thousands of shipyard workers, men and women of all races and ethnicities, who did more than their part to win WWII. Our vision is that our Bethlehem Fairfield site will host rapidly growing numbers of skilled Baltimore workers and that the presence of the JOHN W. BROWN will remind our community and the citizens of Maryland of those who worked so hard to build the ships that saved the world.”

The estimated cost to rebuild the pier includes complete demolition of the remains of the 80-year- old pier, construction of a new heavy ship pier and repair of the bulkhead at the foot of the pier. Other types of replacement piers are also being considered, including floating piers.

Under the joint proposal, dual use of the rebuilt pier would meet Maritime Industrial Zoning Overlay District (MIZOD) requirements for deep water access at the working waterfront by combining the JOHN W. BROWN’s education and training missions with MAPC’s advanced maritime work. MAPC would turn over ownership to the new non-profit and in return receive a long-term lease for a portion of the pier. The MIZOD designation was created by Baltimore authorities in 2004 and renewed in 2014.

In addition to its “living history” cruise program, the ship provides a fully operating training platform for the an Anne Arundel county STEM program, U.S. Navy Sea Cadets, police and fire first responders, the US Customs and Border Patrol, the Baltimore-based Maritime Institute of Technology and Graduate Studies, the Marine Engineers Beneficial Association, and others.

The ship is operated and maintained by a 175-person all volunteer crew, ranging from fully licensed ship masters to entry level deckhands and engineering workers drawn from PLS’ overall membership of about 1,200. Since 1988, volunteers have contributed more than 1.9 million volunteer hours of service to the vessel.

The ship, one of more than 384 Liberty Ships completed at Bethlehem-Fairfield, completed 13 wartime voyages carrying troops and cargo. She then served as a maritime trades high school in New York City for 36 years before returning to Baltimore. More than 500,000 people have sailed aboard the vessel or taken pier side tours.

For more information, please visit the SS John W. Brown on facebook and

Contact Michael Barnes at 410-598-3660 or