Page 6: of Maritime Reporter Magazine (October 1978)
Reduction Gear Oil
Liquid Foam 126' 0" 36' 0" 19' 0" 17' 6" 195.81 13 knots 1010 L.T.S.W. 6 berths upper deck 8 berths main deck 100,000 gallons 1,500 gallons 700 gallons 700 gallons 8,000 gallons 3,000 gallons 3,500 gallons
Built By Main Iron Works,
The 6,000-HP McAllister Tugboat
Jabbar Will Work In Arabia
McAllister Brothers, Inc. re- cently accepted delivery of the 6,000-horsepower shipdocking tug
Jabbar from Main Iron Works of
Houma, La. The tug is on a long- term charter to ARAMCO and will be owned and operated by
International Tug Services, a
Saudi Arabian joint venture com- pany, in which McAllister is a partner. International Marine
Services, a well-known tug oper- ator in the Arabian Gulf, is a partner, as well as the Olayan
Group, a successful Saudi Arabian business family. Sheik Khaled
Olayan is the chairman of the company.
The tug was designed by Mc-
Allister Brothers' engineering staff headed by Donald C. Hankin.
Design criteria for the tug were developed by Capt. E.C. Brown and Michael Stegenga of ARA-
MCO, to handle the largest tank- ers in the world, currently 550,000 tons, that now call at the ARA-
MCO Ras Tanura facility in Saudi
Arabia. The propulsion systems and the Horton/Kort nozzles were
SPECIFICATIONS designed by Clancy Horton of
The tug's design includes pro- visions for the difficult task of handling the large tankers during heavy weather, especially during the Shamal season. For this rea- son, the tug is fitted with two automatic bow winches built by
New England Trawler, which hold 250 feet of 11-inch-circumference
Samson braided dacron lines and are controlled by the captain from the pilothouse.
In order to provide the thrust necessary to handle these large tankers with adequate safety mar- gins, the tug is equipped with
Horton/Kort nozzles. These noz- zles give the tug exceptional thrust astern (130,000 pounds), as well as ahead (160,000 pounds).
The high maneuverability of the tug is developed by a six-rudder system (two main rudders and four flanking rudders) which are quick acting (seven seconds hard over to hard over).
The tug has been designed pri- marily to perform as a tractor tug, but local shiphandling cus- toms require the tugs to operate also in the European style; there- fore, the Jabbar is fitted out with a remote quick-release towing hook supplied by New England
Trawler. The unique bow fender system pioneered by ARAMCO and developed by Uniroyal and
McAllister for this vessel is ex- truded low-friction rubber 16 inches by 16 inches by 4 feet long, molded around a steel plate with stainless-steel bolts for fitting on the bow. With this method, bow fenders can be changed by the crew and do not require shipyard or crane service.
The facility at Ras Tanura is situated in a remote area of Saudi
Arabia, and for this reason, the tug is outfitted with extensive firefighting and antipollution de- vices as well as duplicate or com- plete backup systems for all major functions, such as air-condition- ing, generators, hydraulic system, and electrical system.
McAllister Brothers believe that the tug Jabbar is the most powerful tug ever built specifi- cally for shiphandling. The name "Jabbar" means "Powerful" in
Arabic, and its new owners feel that it will perform accordingly.
Powered by two General Motors EMD diesels, the tug Jabbar will be employed docking and undocking the largest tankers in the world at
ARAMCO's Ras Tanura facility in a remote area of Saudi Arabia.
One of the most important features of the new Jabbar are the newly designed automatic line-handling winches as shown on the foredeck of the tug. 8 Maritime Reporter/Engineering News
Among others attending trials at the tug's delivery in New Orleans were, left to right: John Annas, president of International Tug Services; Barry Clark, ARAMCO,
Saudi Arabia, and Brian McAllister, vice president of McAllister Brothers, Inc.