FN Diving Performs Repairs on
Vessel’s Propeller (Sweden)
FN Diving was called upon to perform an inspection and eventual
repairs on a vessel’s propeller which encountered severe vibrations after
passing the thick ice on the Baltic sea. A team of FN Diving technicians was
deployed immediately and travelled the night with all necessary equipment to be
able to perform the repairs whilst the vessel was anchored in a Swedish fjord.
Arriving
early afternoon the following day the team loaded and installed the equipment
on a local workboat and sailed towards the vessel.
The
initial inspection showed one bent tip and 3 edges suffering nicks, cracks and
missing pieces. After consulting the propeller manifacturer, calculations were
made and the bent tip was cropped off and the opposite blade was balanced by
means of cropping off the same dimensions of the tip. Cracks, nicks and missing
pieces on the leading edges were grinded away, resulting in smooth aquadynamic
edges.
The
third blade was bend in a manner that made underwater cold straightening
possible with the cold static load press. Restoring the propellers efficiency
immediately.
A full
propeller polish was performed after completion of the damage treatment, in
order to provide a proper finish.
Afterwards
the vessel sailed without any vibrations or loss of the propeller’s efficiency
Source: http://subseaworldnews.com
