The loaded Marmac 400 leaving the San Francisco Bay

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:

• Review barge ballast calculations and cribbing and seafastening calculations;

• On-hire survey of the barge;

• 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 and its towing connections.

Acknowledgement

Photograph courtesy of Great Lake Dredge & Dock Company.

Project Photographs

Submersing barge inside dry dock.	Float over of dredge Florida.	Dredge and crane barge chocks.	Lashing of the pipes.