Gladding-Hearn Modifies Fast Ferry to Launch Torpedoes

Friday, June 04, 2004

Gladding-Hearn Shipbuilding's fast ferry building expertise has taken an unusual turn, with the testing of a new torpedo-launching system for the U.S. Navy. Systems Engineering Associates Corporation (SEA CORP) of Middletown, R.I., chartered Millennium, the 125-ft. Incat-designed high-speed passenger ferry owned by Rhode Island Fast Ferry and built by the Somerset, Mass., shipyard in 1998 in May, to test an experimental surface torpedo launching system under development by NAVSEA. The catamaran's 37-knot light speed and open third deck were ideally suited to simulate launching from a destroyer or carrier deck.

Using their 3-D Finite Element Modeling (FEM) capability, the shipyard's engineering staff designed a removable foundation to absorb the 12,000-pound reaction force, produced when launching a 750-pound simulated projectile. To facilitate the vessel's quick return to ferry service, the shipyard imbedded a series of threaded inserts in the primary deck structure through the lightweight extruded aluminum decking.

"A 12,000 pound reaction force is relatively small when compared to the Millennium's normal passenger load, but not trivial when you consider the light aluminum structure and small area over which it was spread," explained Peter Duclos, the shipyard's president director of business development. "The FEM quickly showed us the areas of highest stress and allowed us to efficiently design a cost-effective solution."

The new launcher technology, which was developed jointly by the Naval Undersea Warfare Center (NUWC) and SEA CORP, uses multiple standard automotive auto bag inflators to provide the energy to launch payloads.

"This technology makes possible for the first time a sealed and completely modular torpedo launch canister for surface warships, said NUWC engineer David Godfrey.

The launcher was tested in a secured section of Narragansett Bay in mid-May. The vessel returned immediately afterwards to scheduled ferry service between Quonset Point, R.I., and Martha's Vineyard, Massachusetts

Maritime Today


The Maritime Industry's original and most viewed E-News Service

Maritime Reporter January 2016 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

People & Company News

Delia Succeeds Schmidt as Ohmsett Program Manager

MAR Incorporated has named John Delia the Program manager for Ohmsett – The National Oil Spill Response Research & Renewable Energy Test Facility, succeeding Bill Schmidt who retired in December 2015.

SBM Offshore: US Authorities Reopen Corruption Probe

SBM Offshore, the world's top oil production ship leasing company, said on Wednesday that U.S. authorities had re-opened an inquiry into bribery allegations involving the Dutch company.

The Next Generation of Hull Performance Management

Hull performance monitoring solutions can offer significant fuel savings potential, a fact that is prompting growing interest from the maritime industry. To spur

 
 
Maritime Careers / Shipboard Positions Maritime Security Maritime Standards Navigation Salvage Ship Repair Ship Simulators Shipbuilding / Vessel Construction Sonar Winch
rss | archive | history | articles | privacy | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.0989 sec (10 req/sec)