Project Summary

To relocate the Great Lake Dredge & Dock Company's electric dredge FLORIDA and associated equipment from Oakland, CA, to
Brunswick, GA, the submersible barge MARMAC 400 was used. All equipment was floated over the barge, which was submersed
using the San Francisco dry dock. After re-floating the barge, the dredge, crane barge, reel barge, and anchor barge were
seafastened, using custom built steel chocks. Using a floating crane, the pipes were loaded.   

Early November 2005, upon receipt of the tow approval certificate, the 3,400 hp tug SEA ISLANDER made fast and the tow departed
Oakland with destination Brunswick, via Panama Canal.  

Scope of Work

The project scope included:

Project Photographs

Aerial photograph courtesy of Great Lake Dredge & Dock Company.

specialists in marine heavy-lift transportation engineering
naval architects
marine surveyors

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Est. 1992

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Review barge ballast calculations and cribbing and seafastening calculations;
On-hire survey of the cargo barge MARMAC 400;
Check cribbing arrangement as laid out on barge deck;
Attend loading operation of barge inside the dry dock;
Survey the dredge and equipment with respect to tow readiness and internal securings;
Survey the seafastening installation;
Inspect the tug SEA ISLANDER and its towing connections.
Barge with dredge Florida departing
The loaded MARMAC 400 leaving the San Francisco Bay
Submersing barge in dry dock
Submersing barge in dry dock
Float over dredge
Float over dredge
Seafastening hulls
Seafastening hulls
Lashing of pipes
Lashing of pipes