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Assistance in Ice - Coggle Diagram
Assistance in Ice
Types of ships according to berthing procedure
Can work in Dead Slow without parting Lines
High powerful engines that can`t use Dead Slow without parting Lines
Safety of tugs
on line
Tow stern first
If failure on tug
Ship can go engine ahead to stop
Tugs can
Break Ice on Ports
but can`t remove it
Ships shall have
Propeller and rudder
completely submerged
otherwise, risk of hitting ice
Preparation
Ice thick
Needs to be broken
Towing on Line
Risky
Nozzles
Often blocked with ice
Might have protection
Most reliable tugs
Conventional
with open propellers
twin screw are better
ASD tugs - Blocked propeller
Not blocked propeller
blow the blocked one
