Towing & Ship-Assist · Operations
Shortening the towline ('shortening up') is commonly done when:
- AEntering restricted or congested waters to improve control of the tow✓ Correct
- BCrossing the open ocean
- CThe weather worsens offshore
- DThe tug runs low on fuel
Explanation
In harbors, narrow channels, and congested waters, the hawser is shortened (or the tow taken alongside/on the hip) so the master has tighter control and a smaller footprint. Offshore in heavy weather the hawser is lengthened to deepen the catenary.
Authority: Towing seamanship
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