Jack Staff
Maritime
A vertical pole erected at the head of tow directly ahead of towboat. The flag windsock, or peep light aids pilot to align the tow in river navigation.
- — Inland Waterways Audit Techniques Guide retrieved 2014-05-31
A vertical pole erected at the head of tow directly ahead of towboat. The flag windsock, or peep light aids pilot to align the tow in river navigation.