Page 40: of Maritime Reporter Magazine (July 1970)

OCEANIC

ELECTRIC PRODUCTS "Over Four Decades of

Service in the Marine Industry"

Oceanic products are manufactured to meet the require- ments of U.S.C.G.

Electrical Engineer- ing Regulations.

THRU-BULKHEAD FIXTURES

Cast Bronze-Cast Aluminum

Call or Write for

Complete Catalog

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ALSO BARGE CRANES AVAILABLE

Various Whirley Cranes Available

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Winches plus Booms, Engine Parts

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PHONE: (503) 224-4321

SNAME Northern California Section Elects Officers

Hears Technical Paper On Controllable Pitch Propellers

The Northern California Section of The So- ciety of Naval Architects and Marine Engi- neers met on May 14 at the Engineers Club in San Francisco. Elections were held with the following results: Chairman, William Hick- man, Ocean Machinery Company; vice-chair- man, A.J. Haskell, Matson Navigation Com- pany ; secretary-treasurer, Jack H. Troyer,

Todd Shipyards Corporation, San Francisco division; executive committeemen. Douglas F.

Finlayson, Marcona Corporation and Frank

Lee Jr., Morris Guralnick Assoc.

The acting papers chairman, T.B. Thomas, introduced the author, R. Norrby, technical manager of KaMeWa, who presented the paper "Notes on Ships with Controllable Pitch Pro- pe lers with Special Emphasis on Speed and

Maneuvering Qualities." After a short history of the controllable propeller pitch design evolu- tion, Mr. Norrby presented data on two classes of ships in which sister ships were fitted with fixed and controllable pitch propellers. His data suggested something on the order of one per- cent less efficiency for the CP wheel. He fur- ther explained that the various systems are being used by KaMeWa with different prime movers to insure continuous prime mover op- eration at optimum powers. In this area, he felt that economic justification for the greater initial cost could be found.

Pictured lert to right: Reginald Warner, past chairman of the Northern California Section, Chevron Shipping

Co. (retired); Thomas Campion, membership committee chairman, Carrier Corp., and Hujh Dcwner, Section past chairman, Marcona Corp.

T. Bille, of the East Asiatic Company of Den- mark, forwarded a written comment praising the improved maneuvering characteristics avail- able with CP propellers. Edward Johnson of the Maritime Administration commented ad- versely on the availability of suitable service engineers. Hugh Downer, vice-president of

Marcona Corporation, advised that the addi- tional $225,000 invested in their recent vessel of more than 20,000 shaft horsepower was con- sidered recoverab'e in two to three years. tJiX 1 »

Left to right: James A. Stas?k, public relations chairman,

Kings Point Machinery; Benjamin Andrews, executive committee, Systems Economic Analysis; William Swan, executive committee, General Electric Co., and Joseph

Busch, meetings committee chairman, H.J. Wickert Co.

Lert to rignt: Arthur Haskell, Section secretary-treasurer,

Matson Navigation Co.; R. Norrby, author, technical manager, KaMeWa; T.B. Thomas, acting papers chair- man, Marcona Corp., and Frank Norbut, western region- al manager of Bird-Johnson Company.

Mailing Address; 3300 N.W. Yeon Ave.

W.U. Telex: 36-0144 PTL

Cable Scnnltzerbro, Portland

Brazilian Yard To Employ

Hydranautics Hydraulic Systems

Robert Bush, president of Hydranautics,

Inc. recently announced in Goleta. Calif, that a shipyard in Brazil will employ two novel hy- draulics systems to expedite the construction and launching of ships.

EMAQ-Engenharia de Maquina S/A or- dered "friction-'.ock skidding" and "shiplift" systems designed and built by Hydranautics to increase its production capability. The "fric- tion-lock" system will be utilized in two separ- ate production facilities. In the first application, it will be used to move a series of completed 140-ton fishing vessels from two fabrication bays to the "shiplift" where they will be launched. "Friction-lock" is a patented system that combines two components to move heavy loads while providing its own movable anchor point,

Mr. Bush stated. The components are the gripper and jacking cylinders. Hydraulic pres- sure holds the gripper on a rail while the jack- ing cylinders move the vessel in the desired di- rection. By providing its own anchor point, the "gripper" has all of the advantages of a long- stroke cylinder with none of the disadvantages,

Mr. Bush explained. "Shiplift" consists of eight vertical hydraulic subsystems, each with a capacity of 40 tons, that will lower the completed vessels into the water or in reverse, lift vessels from the water for maintenance or repair.

In the other application, "friction-lock" will be used in the fabrication of 7,000-ton ships constructed from modules. Modules weighing up to 300 tons will be built on pallets, moved to the launch ways, and aligned by the "fric- tion-lock gripper." Load movement can be con- trol ed to within one-sixteenth of an inch by "friction-lock."

Hydranautics, a subsidiary of the Cosmodyne

Corporation, Torrance, Calif., also designs and manufactures heavy material handling equip- ment for the petroleum and construction in- dustries.

Twin-Screw Tug Ordered

From Southern Shipbuilding

A twin-screw tug with a length b.p. of 89 feet 6 inches, a beam of 28 feet and a depth of 17 feet is currently under construction for the

Panama Canal Company, New Orleans, La., at the Slidell, La., yards of Southern Ship- building Corporation.

Designated Hull No. 92, the tug will be pow- ered by 3,000-total-bhp diesels. 42 Maritime Reporter/Engineering News