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PADD LAUNCHES NEW YARD TUG: A new 57-foot welded steel tugboat, built by Perth Amboy Dry Dock Co., was recently put into service at their Hoboken, N.J., headquarters. The twin-screw vessel, pow- ered by 250-hp diesels, weighs almost 32 long tons and has a fuel oil capacity of ap- proximately 4,500 gallons. Named Josephine B, in honor of the wife of Alfred C. Brugge- mann, president of PADD, it carries the green and white colors of the company and their emblem of a bright green bullfrog on a lily pad. In 1887, when Perth Amboy Dry Dock Co. was founded, they were servicing three-masted schooners. Now, their piers can handle vessels up to 800 feet long with a beam of 130 feet and a 32-foot draft at low water. Tampa To Relocate Its Shrimp Docks To Make Room For American Ship's Expansion The Tampa Port Authority has selected Watson and Company, P.O. Box 18405, Tampa, Fla. 33679, architects-engineers of Tampa and Orlando, to plan and design the relocation of the Port of Tampa's shrimp docks. The move is needed to make room for an expansion of the facilities of Tampa Ship Repair & Dry Dock Co., Inc., a division of The American Ship Building Company. The existing shrimp docks are in the Hookers-Point area of the port. The new docks will be near the 22nd Street Cause- way, a major traffic route leading eastward out of the port area. About 75 shrimp boats operate out of Tampa. To furnish new berthing accommo- dations for the fleet, it is estimated that a pier about 1,400 feet long will be built, plus three more loading/unloading piers. A num- ber of ancillary buildings will also be part of the project. Watson and Company has assigned Fred B. Eastman as its project manager. New Literature Available From Henschel Corporation On New Digital Shaft RPM Indicators Precise digital presentation of shaft speed and direction of rotation is provided by these new digital shaft RPM indicators by Henschel. Two models are available: one for shaft speeds of 0 to 199 rpm, the other from 0 to 999 rpm. Forward motion is displayed in big, easy-to-read LED figures. Astern rotation is indicated by a blinking minus sign immediately preceding the digits. A dimmer control is provided for dark-adap- tation convenience. Enclosed in a drip-proof cast-aluminum case, these units are designed for panel, con- sole or bulkhead mounting. Driven by a standard shaft speed trans- mitter and powered by 115 VAC-60Hz, these digital shaft speed indicators can be used alone, with other similar remote read- ing unit, or in a system containing volt- meter (dial) type units with no degradation of the system's plus/minus 1-rpm accuracy. Standard scale factor is 7.2 VDC per 100 rpm. Other scaling factors can be provided. The operating range is 0 degrees to 50 de- grees centigrade. For a copy of the new literature, write John G. Landers, Henschel Corporation, 14 Cedar Street, Amesbury, Mass. 01913. SNAME Philadelphia Section Hears Presentation On 'Ocean Thermal Energy Conversion' The Philadelphia Section of The Society of Naval Architects and Marine Engineers held its March meeting at the Engineers' Club in Center City. Seventy members and guests were on hand for the presentation of a paper entitled "Ocean Thermal Energy Conversion (OTEC) — a General Review," by Robert M. Eisert. Following the social hour and dinner, coordinator J.M. Ballinger called on E. Schorsch, vice president of science and tech- nology at Sun Shipbuilding and Dry Dock Co., to open the technical session and in- troduce the author. Mr. Schorsch outlined the work done in recent years by Sun, in support of the OTEC Concept proposed by the Applied Physics Laboratory (A.P.L.) of the Johns Hopkins University. Principals of the Philadelphia Section meeting, left to right: Capt. J.M. Ballinger, USN (ret.), Sun Shipbuild- ing & Dry Dock Co., coordinator; A.C. Brown, chair- man of the Section; F.W. Beltz, Section vice chair- man, and R.M. Eisert, Sun Shipbuilding, author. Mr. Eisert is manager of machinery sci- ences at Sun, and has been directly involved in that company's support of the A.P.L. work in this field. "Ocean Thermal Energy Conversion is a concept by which power is generated in a cycle operating with ocean surface water as a heat source, and deep-ocean water as heat sink. It requires large volume flows per unit power output, but consumes no fuel and produces no environmentally negative by-products." The OTEC concept is not new. It is dis- cussed in papers dated 1881, and an open cycle plant was built and operated by Georges Claude in 1930. In light of the cur- rent energy awareness, the idea has re- ceived much more attention in recent years, and the paper reviews those plants which are now the subjects of serious study. The paper was well received, and the au- thor was presented with a certificate of ap- preciation by A.C. Brown, chairman of the Philadelphia Section. Halter Delivery To Tidewater Completes Eighty-Six Vessel Fleet Expansion Program Tidewater Marine Service, Inc. of New Orleans, La., has accepted delivery of the Sellers Tide, a new towing-supply vessel built by Halter Marine Services, Inc. at their Lockport, La., shipyard. The 194-foot by 40-foot by 17-foot offshore service vessel is powered by two EMD diesel engines rated at 5,750 continuous horse- power. Named in honor of Ronald G. Sellers, a long-time employee of Tidewater, the ves- sel is equipped with bow thruster, built-in "P" tanks for carrying bulk cargoes, and a Smatco double-drum winch providing 300,000 pounds of single line pull. The 194-foot Sellers Tide completes Tidewater's fleet expansion plan extending over a period of 42 months at a cost exceeding $130 million. The Sellers Tide is the last of 13 U.S.-flag vessels, two 180-foot towing-supply vessels, three oceangoing tugs, six 194-foot towing- supply vessels and two 218-foot towing- supply vessels, which were constructed and delivered during this current fiscal year end- ing March 31, 1977 at a cost of approxi- mately $41.7 million. This completes a fleet expansion program extending over a period of 42 months, during which Tidewater has added 86 vessels by new construction and acquisition at a cost exceeding $130,000,000. Plans are now being finalized for additional marine capital expansion. Tidewater is the world's largest owner and operator of offshore marine support service vessels. Its fleet of approximately 385 vessels operates in all major offshore oil and gas areas of the world. ''WE EXPECT THINGS 73 G£TA &/r STICKY WH€A/ O/L 'ZSXllXB5COM-ES SC4KC6 „ " May 15, 1977 11
