Page 20: of Maritime Reporter Magazine (September 1988)

Yugoslav Shipbuilding (continued)

Split Shipbuilding is presently in the process of erecting a building berth with five turning slipways for the construction of vessels and off- shore structures. The new berth is expected to be able to handle ships up to 1,050 feet long, 282 feet wide and weighing as much as 65,000 tons.

The concept of the turning slip- way was developed by Split and the

Faculty of Engineering and Ship- building, Zagreb and the Naval In- stitute, Zagreb, as a simple, econom- ic solution for both side and longitu- dinal launching.

The Shoushone Spirit, a 100,000/ 110,000-dwt tanker being built for

American owners, was recently launched at the Rijeka yard of 3.

Maj Shipbuilding.

Intended for the carriage of crude oil of up to 10.5 tons/cubic meters specific gravity, the tanker was or- dered by Teekay Shipping. She is 809-1/2 feet long, has a breadth of 139.3 feet, and draft of 47.3 feet.

The main propulsion engine for the tanker is a slow-speed, reversi- ble, turbocharged Sulzer-3. Maj 5

RTA 72 diesel engine rated at 10,330 kw at 78 rpm. The engine is designed to operate on both diesel and heavy fuel up to 420 cSt at 50 degrees C (4,000 Redwood at 38 degrees C).

The vessel will have a total of 16 cargo tanks and two slop tanks for the carriage of four segregated car- goes simultaneously. The cargo tanks will have a 98 percent capac- ity of 123,000 cubic meters.

The tanker was constructed in accordance with the rules of the

Lloyd's Register of Shipping for the

PROPULSION

UPDATE 3.MAJ Diesel Works Builds

First Sulzer RTA 72 Engine Ever

A 110,000-dwt tanker under construction at 3. Maj's Rijeka yard. The ship is being built for Teekay Shipping. class +100A1 + LMC, UMS, IGS,

OIL TANKER. The degree of auto- mation aboard conforms to rules and requirements of the class for unattended machinery space.

For free literature detailing the shipbuilding services and facilities of Yugoslav shipyards,

Circle 112 on Reader Service Card

Lys Line Orders

Second Paper Carrier

From Titovo Shipyard

Simonsen & Slang's Lys Line of

Norway recently ordered a second 3,400-dwt paper and forest products cargo carrier from the Yugoslavian shipyard Titovo Brodogradiliste,

Kraljevica.

The cargo carrier will have a over- all length of 295.2 feet, beam of 55.8 feet and draft of 19.2 feet and she will be specially designed for the needs of paper and forest products.

The vessel is expected to be deliv- ered in late 1989 or early 1990, while the first carrier is scheduled for a

July 1989 delivery.

From the moment of its introduc- tion into the market seven years ago, the RTA series of Sulzer marine diesel engines set new dimensions to operating economy and reliability, and maintenance.

In 1984, the so-called "-8 series" engines, covering cylinder bores of 380, 480, 680, 760, and 840 mm, with a stroke-to-bore ratio of about 2.9, were complemented by the "-2 se- ries" engines covering cylinder bores of 520 and 620 mm, and of a higher stroke-to-bore ratio of 3.46.

During 1985, the demands from the market called for an increase in the maximum speed and output of the "-2 series" engines. This is also the time when a new engine type, the RTA 72, with a complementary bore size of 720 mm was introduced.

In its design concept, the RTA 72 is fully in line with the previous en- gines of the "-2 series" which, among others, means it is available in versions of up to eight cylinders maximum.

Main performance data of the RTA 72 engine: Two-stroke, single-acting, slow-speed, turbo- charged engine; Output range 1,410- 2,570 kw/cylinder; Speed range 66- 91 rpm; stroke 2,500 mm; Cylinder bore 720; and Spec, fuel consump- tion at mcr 171 g/kwh.

Acceptance testing on the 5 RTA engine built by 3.MAJ, which has extensive experience in manufactur- 3,332 TEU More Service

For 40 years Jugolinija has taken pride in offering its shippers only the very best service.

This tradition continues with the introduction of 2 new full container vessels to the fleet.

The Sarajevo Express and the Koper Express will help complement Jugolinija's already modern and extensive fleet. In addition, in our anniversary year, we have also introduced intermodal service in Europe.

All this helps to maintain the tradition of good service for which we have become renowned. 51001 RIJEKA. YUGOSLAVIA.

P 0 Box 379 Obala lugoslavenske momance 16

Telex 24218 yu juline 24408 yu juline 24448 yu juline

Telephone (051) 33 111 422 555

Telefax 32914 421443

Telegrams Jugolinija Riieka

One of the world's most experienced cargo fleets.

Regular Lines: North Europe. North America (container service) South America-Atlantic coast. South America-Central and Pacific coast. Levant (conven- tional Ro-Ro and container service) Middle East (conventional service). Middle East (Ro-Ro and container service). Bengal Bay/Sri Lanka. Far East People's

Republic of China TRAMP VESSELS CARRY CARGOES TO PORTS ALL AROUND THE GLOBE.

U.S. GENERAL AGENT: CROSSOCEAN SHIPPING CO. INC. Suite 2045. One World Trade Center New York. NY 10048 Tel (212)432 1160/1170 Telex Domestic TWX 710-581-6029

Oyetseas-RCA 232 283 OTHER U.S. AGENTS: AT1ANTA. Crossocean Shipping Co of Georgia Inc Tel 404 982-0435 TWX 810-751 0017 BALTIMORE. Crossocean Shipping Co Inc

Tel 301-282-5250 TWX 710-234-1032 BOSTON. Patterson Wylde & Co Inc Telex 62879909 CHICAGO. (Rolling Meadows) Trans Trade Inc Tel 312-577 4484 Telex 275319

PTCHI UR CLEVELAND. Trans Trade Inc Tel 216 331 -6030 Telex 49370% MWS CI. DETOOrT. Trans Trade Inc Tel 313-5619780 Telex 910-2504807 HOUSTON:

Overseas Freiqht Corporation Tel 713-681-0205 Telex 170578 OVERFRT HOU JACKSONVILLE Please see New York CHARLESTON. Please see Savannah LONG

BEACH. Monitor Steamship Agency Inc Tel:213-436-9081 Telex: 6711534 MIAMI. Farovi Shipping Corp. Tel 305-373-4765 Telex 6714066 MOBILE. Please see New York

NEW ORLEANS. Overseas Freight Corporation Tel 504-581 3040 Telex 161889 NORFOLK. Crossocean Shipping Co Inc Tel 804-423-7561 TWX 710-881-1141

PHILADELPHIA. Robinson & Mastrangelo Inc Tel 215-925 3810 TWX 710-670-1988 SAN FRANCISCO. (San Rafael) Monitor Steamship Agency Tel 415-453-8834 Telex 279040

MSSFUR SAVANNAH. Crossocean Shipping Co of Georgia Inc Tel 912-238-2170 Telex 543015 crossocean sav TAMPA. Fillette Green & Co of Tampa Tel 813-223-1481

TWX 810-876-0695 Our woridwide agency network includes over 400 agents Contact us for information on the agents in your particular area.

Circle 175 on Reader Service Card ing RTA engines under license, were recently completed. The first engine of this bore size ever built in the world, it will be installed aboard a motor tanker. Its particular per- formance data are the following: output, 10,550 kw; speed, 78 rpm; and sfc at mcr, 169 g/kwh.

In addition to possible variations in combinations of output speed (determining the layout field), the flexibility offered by the RTA 72 engine—actually by all the RTA types—has been further extended to optional possibilities of installing:

Two-stage air cooler, providing an excellent possibility of recovering waste heat energy removed through the compressed scavenge air (4.5 percent of engine output); Standard optional power take-off for the con- nection of an alternator to the main engine for ship's electrical power generation, which for this particular engine features up to 1,350 kw; and

Standard optional efficiency-boost- er using recovered exhaust gas ener- gy directly at the engine crankshaft for further fuel savings—with the 5RTA 72, the recovered energy can be as high as 800kw, which in terms of fuel consumption means a fuel saving of about 5.5 g/kwh.

Design features of the RTA 72 engine: Sturdy engine structure with low stresses and small deflec- tions, consisting of bedplate, col- umns and cylinder block, preten- sioned by vertical tie rods; Single- wall bedplate with integrated thrust block. Standardized, large surface main bearing shells; Robust A- shaped columns, assembled with stiffening plates or of monoblock design; Single cast iron cylinder jackets, bolted together to form a rigid cylinder block; Lamellar cast iron, bore-cooled cylinder liners with load-dependent cylinder lubri- cation; Solid, forged, bore-cooled cylinder covers with bolted-on ex- haust valve cage; Camshaft gear drive housed in a special double col- umn placed at the driving end; For larger bore engines, where required, balancers mounted on the engine;

Injection pump and exhaust valve actuator combined in common units for two cylinders, each camshaft driven; and Constant-pressure tur- bocharging system (highly efficient uncooled turbochargers) with uni- flow scavenging assisted by auxilia- ry blowers for low load operation.

Possibility for in-service cleaning of charge air coolers.

Service Results—The exhaust valve, introduced at Sulzer as a nov- elty for two-stroke diesel engines, has fully justified the designers' as- surances of the exhaust valve ac- tually not being a novelty for Sulzer.

The exhaust valve, positioned sym- metrically, made of a top quality material (Nimonic), and operating at relatively low temperatures, has 26 Maritime Reporter/Engineering News