Page 13: of Maritime Reporter Magazine (April 15, 1981)

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Halter Delivers Tug/Supply

Boat To D.F. Levy Marine

Halter Marine, Inc. has deliv- ered the Summer Sun (shown above), a tug/supply boat, to D.F.

Levy Marine Limited I, Morgan

City, La. She is the second of six vessels to be built at Halter's

Moss Point, Miss., division for the

Morgan City operator. A sister vessel, the Spring Rain, was de- livered recently, while the April

Showers, Spring Mist, September

Morn, and Winter Snow will fol- low this summer. The two new vessels are now serving the off- shore oil and gas industry in the

Gulf of Mexico.

The Summer Sun is 180 feet in length with a 40-foot beam and 14-foot depth. She is powered by two GM Electro-Motive Division 12-567 BC diesel engines devel- oping 1,260 horsepower each at 810 rpm. Falk LST reduction gears with a ratio of 2.98:1 turn the two stainless-steel, 90-inch- diameter four-bladed propellers.

Engine controls were provided by

Westinghouse and a Bird-John- son 300-hp bow thruster driven by a GM Detroit Diesel 8V71 en- gine improves maneuverability and station keeping.

The Summer Sun can carry 4,000 cubic feet of dry bulk mud and 1,660 barrels of liquid mud.

She has a cargo capacity of 525 long tons and has 3,177 square feet of cargo space on her aft deck, which is fitted with an HBL anchor windlass.

Two Delco 99-kw generators powered by GM Detroit Diesel 8V71 engines provide electric service, while two Quincy D325 compressors supply air service.

Ballast, bilge, and fuel transfer pumps were provided by Aurora.

The Summer Sun is American

Bureau of Shipping classed + A-l,

Full Ocean Towing, "E", AMS, and is U.S. Coast Guard Sub- chapter I and U.S. Public Health approved.

Trico Limited 111 Seeks

Title XI On Four Vessels

To Cost $13.3 Million Total

Trico Limited III, Houston, has applied to the Maritime Admin- istration for a Title XI guarantee to aid in financing the construc- tion of four tug/supply vessels intended for operation in the

Gulf of Mexico. Eastern Marine,

Inc., Panama City, Fla., is the proposed builder of the vessels, two of which are to be 180 feet in length, and two 166 feet. De- livery dates have not been estab- lished.

The requested guarantee is for $11,637,000, or 87V2 percent of the vessels' estimated cost of $13,300,000.






There is no galling or seizure on the shaft because: • Weight of the Nut is taken on the cylindrical barrel of the thread because of generous axial clearance. There is no wedging as on "V" threads. Nut spins on freely. • Pilgrim Nuts are guaranteed to be removable if fitted with Acme threads. • Two threads per inch are used instead of four. Takes less time ON and OFF • Thread gauges are not necessary. The Pilgrim Nut is furnished threaded.

Shaft manufacturer cuts shaft thread to furnished drawing tolerances.


Built by

National Sreel &

Shipbuilding Co. for Shell Oil Co.

Used Pilgrim propeller nuts tor installing 107,000 pound Pilgrim

Keyless Propeller.

Send for Descriptive Literature

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The "Krystal Sea," owned and operated by the Krystal Corporation out of Homer. Alaska, is both a unique vessel and a unique operation. Ports of call for this "landing craft" design coastal freighter are Alaskan beaches, where she "docks" to unload. She windlasses herself off the beaches, and tows too with her Markey diesel towing winch, spooling I '/V'wire rope.

It provides the power, strength and dependability to handle any sea state. For top-notch deck machinery, see Markey.

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April 15, 1981 Write 193 on Reader Service Card 15

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