Page 92: of Maritime Reporter Magazine (June 1986)

Tampa Shipyards Delivers Fifth

Products Tanker To Ocean Shipholdings

The 30,000-dwt motor vessel

Lawrence H. Gianella, fifth of five sophisticated T-5 product carriers designed and constructed by Tampa

Shipyards Inc. in Florida, was deliv- ered recently to Ocean Shiphold- ings, Inc. of Houston. The new ship is now being operated by the own- er's subsidiary, Ocean Product

Tankers, Inc., under charter to the

Navy's Military Sealift Command.

The tanker has an overall length of 615 feet, beam of 90 feet, depth of 53 feet 8 inches, and design draft of 34 feet. She is powered by a low- speed IHI/Sulzer 5RTA76 fuel-effi- cient diesel engine with a maximum continuous rating of 18,400 bhp at 98 rpm. The engine, derated to pro- long its service life, drives a shaft generator through a speed-increas- ing gearbox to provide electrical power while at sea. The combina- tion of these two characteristics pro- vides the operator with excellent fuel economy.

The propulsion plant is designed for unmanned operation, and is classed + AMS ACCU by the Amer- ican Bureau of Shipping. The en- gine is direct drive via a solid shaft to a fixed-blade, nickel-aluminum- bronze propeller manufactured by

Ferguson. Speed at 75 percent of mcr (15,300 bhp) is 16 knots.

The Gianella is designed to de- liver 30,000 long tons of petroleum products worldwide, and is ice- strengthened to ABS Ice Class 1C for Arctic and Antarctic operations.

Cargo is carried in seven pairs of tanks, each pair being segregated from any other pair to allow seven different liquid cargoes to be car- ried. Each tank is fitted with a stainless steel, high-pressure hy- draulic cargo pump supplied by Fra- mo. The pumps are sized to dis- charge the entire cargo within 16 hours, and in service have achieved this easily.

All cargo tanks are fully inerted by a Holec inert gas generating sys- tem designed to supply two pairs of tanks through dedicated systems to guard against cargo contamination; the remaining five pairs are served by a common system. Cargo piping and inert gas piping are constructed entirely of stainless steel. Facilities for underway replenishment at sea are provided from two stations; re- fueling at sea capability over the stern is also incorporated.

The unique construction of the cargo tanks developed by Tampa

Shipyards has substantially reduced surface area compared with conven- tional construction. This results in significant cost reduction in epoxy coating maintenance inside the car- go tanks.

Water ballast is carried in double bottom and wing tanks, completely segregated from the cargo, and is arranged to qualify for "Protective- ly Located Segregated Ballast" un- der IMO regulations.

The entire hull, except founda- tions and superstructure, is con- structed of AH36 high-strength steel, realizing a 15-percent saving in total steel weight over Grade A steel, and is designed for a scantling draft of 36 feet.

Extensive vibration analyses were confirmed by instrumenting the ship during sea trials and conduct- ing a comprehensive vibration sur- vey. Noise predictions were also made and confirmed to be accept- able by survey during sea trials.

This survey, combined with the favorable vibration characteristics, results in a comfortable living atmo- sphere for the crew.

For further information on Tam- pa Shipyards,

Circle 50 on Reader Service Card

LAWRENCE H. GIANELLA

Major Suppliers

Main engine IHI/Sulzer

Propeller Ferguson

Diesel generators (3) . . . Caterpillar/Kato

Shaft generator Nishishiba

Emergency generator . . Detroit Diesel

Waste heat boiler Kentube

Air compressors (2) . . . .Hamworthy

Waste heat distiller Alfa-Laval

Steering gear Hastie

Sewage treatment plant FAST

Foam system National Foam

Cargo tank washing system . . . Dasic

Cargo tank remote level gauge system Saab

FW cooling, SW cooling, lube oil, ballast and cargo pumps Framo

Fuel oil purifiers (3) Alfa-Laval

Main switchboard . . . .Westinghouse

Inert gas generators Holec

PROPULSION UPDATE

Caterpillar 3600 Series Now

Qualified On 1,500 Redwood Fuel

Caterpillar Engine Division's newest family of diesel engines, the 3600 Series, is now in production at the company's new plant in La- fayette, Ind. North American field operations for the 3600 began in

August 1984. A 3606 marine engine powering a bulk carrier now has more than 8,500 hours service at 2,250 bhp; a 3608 prime power gen- erator set has accumulated 5,700 hours at 2,000 kw, 60Hz; and a 3612 marine engine in a Great Lakes freighter has run 2,750 hours at 4,500 bhp. In addition, single-cylin- der test engines have operated

CATERPILLAR ENGINES (FAMILY/MOOEL/SERIES/SPEC IF ICATI0NS ) 35,000 hours, including engine de- velopment work on spark-ignited and residual-fuel configurations.

The 3600 Series has now been qualified on 1,500 Sec. Redwood No. 1 fuel at contaminant levels of up to 3V2 percent sulfur and 300 ppm vanadium. Development work is continuing on heavier fuels. Produc- tion of the 3600 Series began with four generator sets shipped during the latter part of 1985. A 3612 loco- motive engine was installed by the end of December, followed by a 3616 prime power generator set, a 3606 engine for dredge power, and three 3608 marine engines.

The four-stroke-cycle, turbo- charged and aftercooled engines

Faally

Mode 1/

Series

Output Range

KW (HP)

Displacement

L (cu in) i

Bore

HTl x Stroke ( in) Configuration N.m

Poak Torque < lb ft)

Modal/

Ser ies 1.1 Liter 3114 52 - 116 (70 - 155) 4.4 (266) 105 X 127 (4.1 x 5.0) 1-4 241 - 532 (177 - 391) 3114 3116 116 - 172 (155 - 230) 6.6 (403) 105 X 127 (4.1 x 5.0) 1 -6 532 - 790 (391 - 581 ) 3116 3200 3208 93 - 187 (125 - 250) 10.4 (636) 114 X 127 (4.5 x 5.0) V8 542 (400) to 868 <640) 3208 3300 3304B 64 - 123 (85 - 165) 7.0 (425) 121 X 152 (4.8 x 6.0) 1 -4 388 (286) to 675 (498) 3304B 33066 93 - 210 (125 - 270) 10.5 (636) 121 X 152 (4.8 x 6.0) 1-6 588 (433) to 1092 (805) 33068 3400 34068 187 - 300 (250 - 402) 14.6 (893) 137 X 165 <5.4 x 6.5) 1 -6 1401 (1030) to 1816(1335) 3406B 340® 238 - 375 (319 - 503) 18.0(1099) 137 X 152 <5.4 x 6.0) V8 1757(1296) to 2167(1598) 34088 3412 317 - 559 (425 - 75) 27.0(1649) 137 X 152 (5.4 x 6.0) VI2 2462(1816) to 3375(2489) 3412 3500 3508 507 - 745 (680 - 1000) 34.5(2105) 170 X 190 (6.7 x 7.5) V8 3608(2654) to 4595(3379) 3508 3512 760 -1118 <1020- 1500) 51.8(3158) 170 X 190 (6.7 x 7.5) VI 2 5732(4214) to 6445(4739) 3512 3516 1010 -1491 (1355- 2000) 69.0 <4210) 170 X 190 (6.7 x 7.5) V16 7220(5307) to 8492(6244) 3516 3600 3606 1270 -1845 (1700-2475) 110.8(6764) 280 X 300 (11.0 x 11.8) 1 -6 17347 (127 55) to 19447 0 4299) 3606 3608 1680 -2485 (2250-3330) 147.8(9018) 280 X 300 (11.0 x 11.8) 1-8 22958(16881 ) to 26164(19238) 3608 3612 2535 -3690 (3400-4950) 221.7 0 3527) 280 X 300 (11.0 x 11.8) VI 2 34694(25510) to 38892(28597) 3612 3616 3360 -4965 (4500-6655) 295.6(18036) 280 X 300 (11.0 x 11.8) V16 45918(33763) to 52288(38447) 3616 3/M have a bore of 280 mm and stroke of 300 mm (11 by 11.8 inches), with in- line 6- and 8-cylinder and V-12 and

V-16 arrangements in a power range of 2,000 to 6,000 bhp.

Caterpillar expects the 3600 Ser- ies engines to be among the most fuel-efficient and durable in their power and speed class, 720 to 1,000 rpm. Initial rated fuel consumption of 0.327 pounds per horsepower- hour was achieved through system and component efficiency, including turbocharger match, unit injectors, precision injection timing, and high combustion pressure capability.

The family is designed to operate on a range of blended fuels.

Serviceability of the 3600 family has been insured with engine- mounted oil and fuel filters, seg- mented crank camshafts, and devel- opment of exchange cylinder repair kits and hydraulic servicing tools.

The 3600 Series is said to be the only totally new medium-speed die- sel in the 3,000-6,000 bhp class engi- neered and manufactured in North

America in more than two decades.

Caterpillar becomes one of a limited number of diesel engine manufac- turers offering worldwide distribu- tion and parts and service support for diesels in the 70-6,000 bhp range.

For additional information and free literature on the Caterpillar 3600 Series engines,

Circle 43 on Reader Service Card 1 92 Maritime Reporter/Engineering News