Great Loop Planning Tools

Great Loop Tools and Planning Worksheets

These tools turn common Great Loop questions into practical numbers and checklists. They are deliberately conservative: the point is not to produce a perfect answer, but to reveal the assumptions that deserve verification before the boat moves.

Maintained by TheCenterOf editors. Last reviewed: 2026-06-10. This page is a planning aid, not navigation, legal, insurance, mechanical, or safety advice. Verify current charts, notices, bridge and lock information, weather, marina terms, insurance language, and local rules before acting.

Start with the tool that matches the decision

How to use these tools

Use them before the plan gets emotional. If a tool says the numbers are tight, that does not mean the trip is impossible. It means the crew should call the marina, recheck the chart, add a weather day, measure the boat again, carry more reserve, or choose a calmer staging point.

Related flagship guides

30/60/90-day planning timeline · Boat-buying checklist · Weather-window examples · Marina stop checklist