Page 19: of Maritime Reporter Magazine (November 15, 1971)

Sperry Marine Demonstrates

New Doppler Speed Log ships early this year, and the fact that Offshore

Supplies Association (S.E.A.) Pte. Ltd. has given the contract to it is a clear indication of

Singapore's progress in the shipbuilding in- dustry.

These two specialized vessels built to Lloyd's

Register + 100A1 would be used to assist in the offshore oil industry and are ideal because they require no wharf or crane facilities to un- load or load.

Chua Chor Teck, general manager of Singa- pore Slipway & Engineering Co. (Private)

Ltd. said that the new contract, worth about three million dollars, is a good indicator of things to come and has expressed satisfaction that despite his company's brief existence, it has contributed significantly to the shipbuild- ing industry in Singapore. To the best of Mr.

Chua's knowledge, these two ro/ro vessels will be the first built in Singapore.

Calpac Traders, Ltd. Named

Distributor In Malta For

Arnessen Chipping Hammers

Corrosion Dynamics, Inc. of Roselle, N.J., manufacturers of the well-known line, of Ar- nessen Chipping Hammers and Production

Deck Scalers, has announced the appointment of Calpac Traders, Ltd., Valletta, Malta, as their distributor for the Mediterranean Area.

According to Kenneth Westphal, vice presi- dent of Corrosion Dynamics, Inc., Calpac Trad- ers will handle the complete line of Chipping

Hammers and Deck Scalers for vessels calling at the Port of Valletta.

Additional information may be obtained from

Calpac Traders, Ltd., 25, Pinto Wharf (P.O.

Box 422) Valletta, Malta, or direct from Cor- rosion Dynamics, Inc., 1100 Walnut Street,

Roselle, N.J. 07203.

Norwegian Shipowners

Award Construction Contracts

To Two U.S. Shipyards

Two Norwegian shipowners have placed or- ders for oil drilling equipment and vessels with

U.S. shipyards, according to reports from Oslo.

Hagbart Waage has ordered two oil drilling rigs for use in the North Sea from the Avon- dale Shipyards in New Orleans, La. They will be delivered in 1973.

The Willi. Wilhelmsen Co. announced they have ordered three supply ships for oil drill work from the Mangone Shipbuilding Co. of

Houston, Texas, for delivery before March 1973. Each ship will total 900 gross tons.

Morton J. Howard, Sperry Marine Systems Division, points to the speed and distance reading of the new Doppler

Speed Log in the pilothouse of the demonstration vessel.

Sperry's new SRD-301 Doppler Speed Log was shown to the maritime fraternity during more than 100 hours of demonstrations in the New

York area in which speed and distance were con- stantly displayed with less than 1 percent error.

The high accuracy results from measuring ves- sel water speed outside the boundary layer of water around the hull. Sperry accomplishes this measurement without the "fin" or protruding sword used in elctro-magnetic units. Such pro- trusions add to vessel maintenance costs through fouling or breakage.

The Sperry Speed Log utilizes a small flush- mounted transducer in the hull which, in addition to minimizing maintenance, results in easy and low cost installations, supporting Sperry's claim of "lowest cost of ownership" for its log.

The Sperry Log can be used on all classes of vessels, ranging from supertankers to fishing ves- sels. The log was demonstrated to more than 25 potential users who expressed enthusiasm for its demonstrated performance.

The SRD-301 Speed Log is sold worldwide by

Sperry Rand Corporation's Sperry Marine Sys- tems Division, with headquarters in Charlottes- ville, Va. The division sells a line of Doppler

Sonar products for maritime use, including navi- gation and docking systems.

Singapore Slipway To Build

Two 400-Ton Ro/Ro Vessels

For Offshore Supplies Group

Singapore Slipway & Engineering Co. (Pri- vate) Ltd., P.O. Box 2169, Singapore, a wholly owned subsidiary of Keppel Shipyard (Pri- vate) Ltd., has won a contract to build two 400-ton ro/ro vessels for Offshore Supplies

Association (S.E.A.) Pte. Ltd., which is a com- pany comprising Sime Darby, Development

Bank of Singapore, Offshore Marine Ltd., Han- sa, and V.T.G. interests.

Singapore Slipway only started (building

O.A.R.N. U S A- CORRESPONDENT

P.O. BOX N. 1395 GENOA, ITALY 16100 JAMES R. PORTER

CABLE M0L0GIAN0 GENOA 17 Battery Place, N. Y„ N. Y. 10004

Telex 27090 OARN Tel. Code 212 WH 3-8795

Telephone 292541 Telex 421474 PORTER

Fincantieri Group Affiliated with Ansaldo, Ltd.

On the oil route Genoa awaits tankers returning from discharging.

Overhauls and repairs of any kind and size of main and auxiliary engines (steam turbine, diesel and electric).

Hull Repairs and Conversions.

OFFICINE ALLESTIMENTO E. RIPARAZIONI NAVI LTD.

SHIP REPAIRS-GENOA, ITALY

November 15, 1971 21