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Vessels with two engines on
two propellers of which one is out of
order On Master's request for one
tug or more.
On Master request for one tug or more.
Submarines to be escorted by one or two imposed tugs according to CA. Survey (depending on submarine condition, anchors, mooring facilities, power drive.... etc).
Air craft carriers to be escorted by two imposed tugs.
a) General Cargo vessels carrying explosive of type class 1, (explosive div.1.1 , div.1.2 , and div.1.3 according to IMDG code) in less than 50% of the loaded cargo, an imposed tug to be added during transit, for security.
b) But if the explosive cargo are 50% or more of the loaded cargo, two imposed tugs are to be added during transit, for security. |