Atlantic Marine Delivers Unusual Tug To Lago Oil To Handle VLCCs At Aruba
Atlantic Marine, Inc., recently delivered a very special multipurpose tug, the Esso Santa Cruz, to Lago Oil and Transport Company, Limited of Aruba, Netherlands Antilles, an Exxon affiliate. The $4-million tug was built to stop and help maneuver to and from dockside VLCCs up to 400,000 dwt in the rough waters off Aruba. The Exxon refinery in Aruba is the largest oil refinery in the world.
The most unusual feature of the Esso Santa Cruz is the two 91/2-foot-diameter, vertically mounted, rotating bow fenders. These special fenders will help the tug maintain its pushing attitude in 8 to 10-foot seas. It will work with two smaller tugs in the refinery's harbor.
C.R. Horton Jr., naval architect of Wilton, Conn., developed the original design for the tug. The working drawings were prepared by R.F. Matzer and Associates of Jacksonville, Fla. If this design is effective, Exxon will build other tugs of a similar design.
The Esso Santa Cruz also has been designed to function as a harbor fireboat and can be used for barge-towing services. The firefighting service utilizes a General Motors Detroit Diesel, Model 16-V-71N, engine driving a 3,000- gpm pump. Two manually controlled fire monitors are mounted on a platform above the pilothouse and two fixed monitors in the bow. A foam proportioning system has also been installed with controls at the monitors and in the pilothouse.
The twin-screw, kort-nozzled, diesel-powered tug's overall length is 120 feet. It has a beam of 37 feet and a depth of 16 feet 11 inches. Draft is 15 feet 6 inches. The Esso Santa Cruz is powered by two EMD Model 16-645 E7A engines (each rated at 2,850 bhp), driving Lufkin Model RS 3626 reverse/reduction gears. Electrical service is provided by two 100-kw generators, driven by GM 8-V-71 engines.
The tug is classed by the American Bureau of Shipping.
Atlantic Marine, Inc., is located outside of Jacksonville, Fla., on Ft. George Island at the intersection of the St. Johns River and the Intracoastal Waterway. Founded in 1964, AMI specializes in inverted-hull construction of steel-hull work and fishing vessels. Facilities include five assembly areas, with two complete launchways capable of handling vessels up to 250 feet in length. A t l a n t i c Marine recently launched the last of five offshore tug/supply vessels for Petrobras of Rio de Janeiro, Brazil. These 185-foot, 6,000-hp vessels were built under a prime contract to Stewart & Stevenson, Inc., and were designed by Schuller & Allen, Inc., both of Houston, Texas. They are powered by Electro- Motive Division 16-645-E-7 engines.