Callan plans to add new large trailing suction hopper dredge

Written by Marine Log Staff
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The Admiral Nimitz is a 16,000 cu. yard trailing suction hopper dredge that will join the Callan Marine fleet in 2023.

Galveston, Texas, headquartered dredging contractor Callan Marine has released the tender package for what will be the largest capacity trailing suction hopper dredge (TSHD) in the U.S.

To be named the Admiral Nimitz, it will have an overall length of 422 feet, a breadth of 92 feet and a hopper capacity of 16,000 cubic yards.

The diesel-electric powered dredge will have a maximum draft of 28.8 feet, a maximum dredging depth of 100 feet in the short dredge pipe configuration, and 130 feet in the long dredge pipe configuration. It will accommodate a crew of 28.

The dredge will be the latest in a series of new vessels ordered by Callan Marine.

The Admiral Nimitz will be a robust, powerful addition to the capacity of the Callan fleet,” said Maxie McGuire, president of Callan Marine. “As the market continues to require maintenance dredging at an unprecedented rate, the Nimitz will allow Callan to respond quickly and efficiently to projects along the coast. Callan Marine continues to lead the industry with larger and faster vessels to meet the growing needs of our waterways.”

Trailing suction hopper dredges are equipped with suction pipes ending in drag heads that, while the vessel moves slowly, collect dredge material from the bottom like a giant vacuum cleaner.

The collected dredge material is pumped into the hopper of the dredge while draining excess water through overflows. The dredge material is discharged in a variety of ways, depending on project specifications.

The Admiral Nimitz will join the ranks of Callan Marine’s other dredges: the 32-inch General MacArthur, the 28-inch General Bradley, the 18-inch General Pershing, the 16-inch General Patton, and the 12-inch General Eisenhower.

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