Ch. 17 Flashcards
What additional considerations must be given to a tug assisting ships in exposed waters?
The tug should be very heavily fendered and its working lines should be stronger than those required for normal harbor service.
What is a roller fender and is it suitable for this type of shipwork?
Large pneumatic fenders (like tires) that are set on axles in a well in the bow of the tug. They are useful for shipwork in exposed areas since they will roll if the tug is pitching heavily as the tug pushes against the ship.
In addition to using roller fenders what other precautions should be taken?
Work the tugs on the lee side when possible and give the lines a longer lead to prevent parting them in the rise and fall of the swell.
Does a tug handle the same in a seaway as it does in protected waters?
No, it takes the tug longer to respond to helm and engine in a seaway than it does inside a bay or harbor.
How does a tug assist a vessel mooring to an SPM?
It usually puts up a line on the lee bow clear of the chocks where the mooring lines are passed and assists the vessel to hold its position while the gear is being run. The tug can also assist the steering while the vessel is making its final approach and backing to the stop.
