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 Reporter February 2015 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

People & Company News

First Subsea Achieves API 17L1 Certification for Bend Stiffener Connectors

Connector technology developer First Subsea has received APL 17LI certification for its bend stiffener connectors from the American Petroleum Institute, the company announced today.

Gulf of Mexico Sees First LNG-powered OSV

A special Offshore Supply Vessel (OSV) has been delivered to Shell for its deepwater operations in the Gulf of Mexico.   The vessel, Harvey Energy, is chartered

Bestobell Bags Hat Trick Order in China

Bestobell Marine, part of the President Engineering Group, has received its third order in the past 12 months from Hudong Zhonghua shipyard in China. The deal

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Maritime Security Maritime Standards Navigation Pipelines Pod Propulsion Ship Electronics Shipbuilding / Vessel Construction Sonar
rss | archive | history | articles | privacy | terms and conditions | 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: 0.2057 sec (5 req/sec)