Deway Marine & Industrial Patents New Seal For In-Water Shaft Repair

Deway Marine & Industrial Craftsmen, Inc. Virginia Beach, Va., has introduced a new seal for inwater shaft repair.

SealChest Corporation has designed, developed, patented and proved the seal, Duclamp, for inwater propulsion shaft repair.

Conventional methods of performing this duty have been to execute a process called a "stern tube wrap." Maintenance is usually under water, using professional divers.

The work can take up to 30 days for repairs and is dependent on ship hull configuration, water environment conditions and the amount of divers available.

The breakthrough Duclamp can save the maritime industry up to 300 percent in the time expended to make this particular repair in real time work comparison. A large logistics ship of the Merrimac class undergoing an underwater stern tube wrap consumed over 1,260 man hours, and because of certain conditions, the work had to be halted.

If the Duclamp had been used to start with, the savings would have been tremendous.

The Duclamp was created and constructed by the team of Holmes Brothers Enterprises of Hampton Roads, Va., and J. Deway Salter, also of Hampton Roads.

Recognized by the U.S. Patent Office, this American-made invention is specifically designed to work on any type of ship stern shaft, and is made for in-water repairs. The SealChest Duclamp can minimize downtime for any ship needed to stay on station at sea. Since the Duclamp will fit any hull configuration, a minimum of divers and port time is needed.

Worn fittings, bearing problems, pitting, corrosion or leakage problems can be repaired without hauling a ship out of the water into a drydock.

For further information on the new seal for in-water shaft repair from Deway Marine & Industrial, Circle 49 on Reader Service Card

Maritime Reporter Magazine, page 43, Jan 1991

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