The 83’ recreational vessel M/V Eventide, a former US Coast Guard
cutter, sank while moored at the marina breakwater in Bremerton, WA. Marina
personnel placed containment boom and absorbents around the sunken vessel, and
SCAA member Global was contacted to perform defueling operations. Divers searched for
leaking pollution and sealed underwater vents, but the vessel was initially too
lively to allow safe defueling and operations were halted. After the stern of
the vessel settled to the bottom of the marina in approximately 60 fsw, divers
were able to remove 1,500 gallons of mixed fuel and water from two tanks
(totaling 179 gallons of fuel after being separated).
The Eventide
had been modified significantly from its original ship drawings, so Global’s
naval architect was consulted to provide accurate weight and force measurements
for lifting. A derrick barge and a deck barge with sealed bin walls were
mobilized and positioned adjacent to the Eventide
on the other side of the breakwater. The vessel was rigged with 4 12-inch wide
nylon straps run to spreader bars, then lifted to the surface with the crane. Once
the decks were awash the vessel was dewatered and contaminates contained; the
crane then lifted the Eventide over
the breakwater and placed it onto the deck barge.
The vessel was surveyed for hazardous
material abatement, and then held until approved was received for demolition
and recycling. Demolition was performed on the deck barge; all contaminates and
debris were contained and then properly disposed of or recycled. Over the
course of the demolition, Global’s crews removed batteries, fire extinguishers,
asbestos and PCBs, 1,300 gallons of oily waste water, 70 tons of debris, and 20
tons of material for recycling.
Boom is placed
around the Eventide to mitigate any
oil or fuel release during
defueling and vessel removal.
Global’s salvage
crews lift the Eventide over the
breakwater for placement on the deck barge.
The Eventide is broken down for recycling
and disposal.
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