Shaver Awards Z-Drive Tug Contract To Martinac

J. M. Martinac Shipbuilding Corporation, Tacoma, Wash., recently received a contract to build a 3,000- hp, twin-screw, Z-drive tug from Portland, Ore.-based Shaver Transportation Company.

The new tug is a variation on the successful Z-30, two-man tug design from the naval architecture firm of Robert Allan Ltd., Vancouver, Canada. The design firm will also serve as the owner's project manager manager until vessel delivery in spring 1993.

The tug is 75 feet, 11 inches long with a beam of 28 feet and a maximum depth of 12 feet. Its configuration is of the reverse-tractor type, with fully-azimuthing Niigata ZP- 2A drive units located aft. Propulsion is supplied by two Detroit Diesel 16V-149TI-DDEC diesel engines, each rated at 1,500 bhp at 1,700 rpm, marking the first installation of the new electronically controlled DDEC engine type in a ship assist tug.

The Z-30 will work ships off the bow using a heavy duty electric line handling winch. An articulated extending- boom crane will increase the speed and safety of the ship assist operation by raising the 10-inch hawser approximately 55 feet to the ship's deck.

The tug is also equipped with four electric winches, mounted fore and aft on the main deck.

For additional information about J.M. Martinac Shipbuilding, C i r c l e 7 1 o n R e a d e r S e r v i c e C a r d For free literature about the Z-30 tug design from Robert Allan, Ltd., C i r c l e 7 2 o n R e a d e r S e r v i c e C a r d

Maritime Reporter Magazine, page 13,  Jul 1992 Washington

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