Towing & Ship-Assist · Ship-Assist
In ship-assist work, a tractor tug (with azimuthing drives forward) offers an advantage over a conventional tug because it can:
- ACarry more fuel
- BApply thrust in any direction and use 'indirect' towing modes for high steering and braking forces✓ Correct
- CTow longer hawsers
- DOperate without a crew
Explanation
Tractor and Z-drive (ASD) tugs vector thrust in any direction and can work in 'indirect' mode, using the hull's hydrodynamic lift against the ship's way to generate large steering and braking forces — far more controllable than a conventional single-screw tug.
Authority: Ship-assist towing; tractor/ASD tugs
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