Page 15: of Maritime Reporter Magazine (September 15, 1977)

Hillman-Designed New Class Towboat

Delivered To Exxon At Baton Rouge

Representing a new class of Hillman-designed towboats, the twin-screw M/V Exxon

Mobile is powered by Colt Industries, Fairbanks Morse diesels.

The M/V Exxon Mobile was recently delivered by Hillman

Barge and Construction Com- pany, Brownsville, Pa., to Exxon

Company, U.S.A., Baton Rouge,

La. The vessel will operate out of the refinery there towing pe- troleum products to locations along the inland waterways and

Gulf Coast.

The Exxon Mobile is the fourth of five such towboats constructed by Hillman Barge for Exxon Com- pany, U.S.A. The Exxon Louis- ville and the Exxon Memphis were delivered last year; the Ex- xon Lake Charles, earlier this year. The Exxon Nashville is yet to be delivered. Representing a new class of Hillman-designed towboats, all five are nearly iden- tical. Each vessel has hull dimen- sions of 120 feet by 30 feet by 10V2 feet with a normal operating draft of 8i/2 feet. The Exxon

Lake Charles, however, has an 8-foot-higher pilothouse to pro- vide necessary visibility because of a special tow with which it will be used.

The new vessel is twin-screw with a total of 3,334 hp from Colt

Industries, Fairbanks Morse 10- cylinder, Model 38D8 1/8 engines turning at 750 rpm. The engines drive through Western Model RH- 27 reverse and reduction gears with 3.48:1 ratio. The four-blade stainless-steel propellers are 102 inches in diameter and were manu- factured by Avondale to Hillman's design. The shafts are ABS-type steel, 10y2 inches in diameter with Daman ceramaloy sleeves fitted in way of the Cutlass bear- ings and stuffing box.

The hull is divided longitudi- nally into seven independent wa- tertight compartments to house 76,000 gallons of fuel oil, 6,500 gallons of potable water, 8,000 gallons of ballast, 4,300 gallons of slop, 4,300 gallons of sanitary water and 260 gallons of dirty lube oil. Self-standing tanks in the steering-gear room contain bath, laundry, upper engine room and enclosed steering-gear room.

Four double staterooms with closets and two semiprivate baths are located in the upper deck- house.

In the pilothouse, navigation and communications equipment include Sperry radars, Elac fa- thometers, RF Communications

UHF/VHF radios, C.A.I, single- sideband radio and a vocal inter- com system all furnished by the customer and installed by We-Do

Electronics of Pittsburgh. Also located in the pilothouse is a con- cealed toilet and a range-refrig- erator-sink combination.

Decks in all crew staterooms and the pilothouse are covered with commercial-type carpeting, while all other decks in living spaces have vinyl linoleum cov- ering. The entire vessel is of fire- proof construction, with U.S.

Gypsum "Novoply" wall paneling and fiberglass acoustical ceiling tile. 1,000 gallons of engine lube oil, 290 gallons of reduction gear lube oil, 175 gallons of generator lube oil, 350 gallons of hydraulic oil, 175 gallons of cleaning fluid and 175 gallons of air filter oil.

Two Lima 125-kw generators driven by Detroit Diesel Model 6-71 engines were supplied by

Keystone Diesel of Pittsburgh,

Pa., and provide 440, 220 or 110- volt a-c power for all onboard systems. A General Electric "Pan-

A-Trol" switchboard and motor control center are arranged for control and distribution of power.

In addition to the normal gauges supplied with equipment, the boat is equipped with a National Ma- rine Service "Tugmonitor" which monitors all main engine and aux- iliary systems. The main control panel is located in the engine room with remote stations in the pilothouse and the main deck stateroom, and an alarm bell in the galley. The system not only monitors machinery but also checks for other problems such as high bilge level or fire any- where in the vessel. The system also has the capability of trans- ferring generators either auto- matically or manually from the engine room or from the pilot- house.

The rudder and steering sys- tem consists of two interconnected steering rudders and four inter- connected flanking rudders. The rudders are controlled by an air over hydraulic system designed by Hillman in conjunction with

Wabco and Weinman Pump of

Pittsburgh. Both rudder systems are operated by separate, power- ful hydraulic units consisting of

Vickers type PVB pumps. Each system has an identical backup pump and motor with transfer capability from the pilothouse.

The main deckhouse contains a paint locker, deck stores locker, double stateroom with private bath and closet, lounge, galley/ messing area with pantry, partial

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September 15, 1977 13