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Wednesday, November 22, 2017

Bollinger Delivers Two Barges

June 15, 2000

Bollinger Marine Fabricators was able to formulate the plans for two 356 x 54 x 13 ft. (108.5 x 16.4 x 3.9 m) double skin asphalt barges for American General Transportation, Mobile, Ala. Studying the influence of barge design and operations by various industry professionals, Normond J. McAllister, Jr., president of American General, came up with the AGT 3600 series asphalt cable barges, which were designed and built in conjunction with Bollinger. According to McAllister, "The 356 ft. (108.5 m) length was chosen because it can carry more cargo in each barge and its length is currently the largest barge length allowed through the remaining 360 ft. (109.7 m)locks on the Tennessee River."

Some noticeable differences in this new series include a tank configuration of five tanks with a centerline bulkhead (total 10 tanks), which lowers the amount of cargo in each tank to improve damage stability and reduce the amount able to leak from any tank should an accident occur.

Each cargo tank has an additional block valve for added flexibility to the system and offers an auxiliary method of securing a tank with a broken valve — thus avoiding an overflow spill caused by a single leaking valve.

The centrifugal pump has a capacity of 7,200 barrels per hour and the positive displacement pump's capacity is 3,200 barrels per hour.

The tow has a combined discharge capacity of 20,800 barrels per hour. These pumping rates are achieved by using one of Caterillar’s newest engines — the all electronic model 3456 engine, which is rated at 550-hp. The entire tow can discharge a cargo of 62,000 barrels in slightly over three hours.

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