Page 56: of Maritime Reporter Magazine (June 1969)

WESTINGHOUSE

TURBINE

RENEWAL PARTS

IN STOCK FOR

IMMEDIATE SHIPMENT

ANYWHERE

Authorized Marine distributor for Westinghouse Turbine

Renewal Parts, Port Electric maintains a complete stock of replacement parts in its own warehouse for immediate delivery.

Authorized Marine Distributors lor:

Westinghouse: Turbine. Controller and Motor Renewal Parts

Cutler-Hammer: Controller Parts

Clark: Controller Parts

Also available: Replacement Parts for Monitor. Reliance.

Crocker Wheeler, and others.

PORT ELECTRIC

Turbine Division

OF PORT ELECTRIC SUPPLY CORP. 155-157 Perry Street, New York, N. Y. 10014

Call (212) 255-4530

SHIP SERVICE OUR SPECIALTY • available in every type of light and lamp fixture needed for Inside marine installations; • also available in many waterproof

Outside light models; • serviceable at any port in the world; • detailed and illustra- ted in our new cata- log. Send for your free copy today.

MURLIN MANUFACTURING CORP.

Quakertown, Pennsylvania 18951

MURHW title company

Stockholm Show Hears

How Hydraulic Units

Will Speed Shipbuilding

Hydraulic systems that could revolutionize shipbuilding techniques from construction through launching were described at the Ship- building and Equipment Show at Stockholm.

Sweden, earlier this year.

Robert M. Bush, president of Hydranautics,

Goleta, Calif., presented a paper, which de- scribed horizontal and vertical heavy-load-dis- placement systems that could be used to con- struct ships of up to 50,000 tons with signifi- cant cost savings.

Mr. Bush outlined two systems. The first was the friction-lock gripper which proved its capability in an end-launching system used by

Maryland Shipbuilding. The shipbuilding firm indicated that more than $14,000 was saved on each launch using the Hydranautics system.

The second system is the "Yardworm," a new system from the research and develop- ment team of Hydranautics.

Friction-lock is a patented system that com- bines two components to move heavy loads either vertically or horizontally and provides its own moving anchor point.

The components are the gripper and jack- ing cylinders. Hydraulic pressures of up to 10,- 000 psi hold the gripper on a rail while the jacking cylinders move the load in the desired direction. For horizontal systems, the rail need not be anchored to the ground. Even on a greased surface the gripper will hold securely. "Yardworm" is self-contained and provides three-axis movement for positioning subas- semblies weighing up to 10 tons.

A load can be moved horizontally at speeds up to two feet per minute with controlled moves of l/16th inch, Mr. Bush stated. Verti- cal movement can be programmed with ac- curacies of J/sth inch. Pitch, roll and yaw movements can be controlled to within l/16th inch.

While moving in the horizontal mode, the "Yardworm" can make turns of ^2-inch per foot traveled.

Where the gripper system anchors itself to a rail and pulls the load, the "Yardworm" lifts the load on vertical jacks and pulls it along a self-contained horizontal jack, much like an inchworm.

Both systems employ state-of-the-art tech- nology, but remain simple and extremely reli- able, said Mr. Bush. Simliar systems have been exposed to the harsh environments of the sea for years without malfunction, he pointed out.

Sun Receives Contract

For Vehicle Carrier

Sun Shipbuilding & Dry Dock Co., of

Chester, Pa., is to construct another vehicle carrier for undisclosed interests at an esti- mated cost of $18-million. Designated Hull

No. 650, this carrier will be propelled by dou- ble-reduction geared turbines developing 32,- 000 shp. It will have the following dimensions: a length between perpendiculars of 643 feet, a beam of 92 feet, a depth of 42 feet inches and will be of 15,200 gt and 14,500 dwt.

Sewart Seacraft Awarded $2,007,332 Contract By NSSC

Sewart Seacraft, Berwick, La., has been awarded a $2,007,332 fixed-price contract for 13 fifty-foot fast patrol craft (PCF). The Na- val Ship Systems Command awarded the con- tract. (N00024-69-C-0302). address city state ZIP

Deck Fittings by

Nabrico Nashville Bridge Company has pioneered in the water transport industry for fifty years.

In that time, many of their innovations have become standard equipment on the rivers.

For example, the Nabrico 40-ton winch, with 20 times faster take up than a ratchet, is available in a broad range of power options... manual, electric, hydraulic or air.

It's made in true right and left hand arrangements.

The Nabrico flush hatch cover has no projections to foul lines or trip deck hands. It secures watertight without tools and is approved by American Bureau of Shipping.

In addition, Nabrico builds hose cranes, locking pins and sockets, bitts, chocks, kevels and bow steering units.

Write for complete catalog and price list of Nabrico deck fittings and hardware.

NASHVILLE BRIDGE COMPANY

P.O. Box 239 Nashville, Tennessee

Other profit-proven products

Include: • Deck Hordware • Hose Cranes • 40-Ton Winch • Bow Steering Units • Flush Mounted-

Watertight Hatches

EAST COAST REPRESENTATIVE: Smilh-Meeker Engineering Co., 157 Chambers St., New York CHv 58 Maritime Reporter/Engineering News