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Estimate planning weights for a working main anchor and a heavier storm-class upsize from your length overall in feet, whether you run a power or sail hull, and how exposed your typical anchoring is. Use results with bottom-type charts and rode planning—not as a legal minimum.
Last updated: April 17, 2026
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Use your published LOA, not dinghy length on davits.
Working / main (lb)
38 lb
≈ 17.2 kg
Storm / upsized (lb)
56 lb
≈ 25.4 kg
Safety:
Interpolation
8–80 ft support
Adjustment
Sail +12% baseline
Weather margin
Up to +35%
26 ft powerboat, moderate conditions — working anchor about:
38 lb
Storm planning ≈ 56 lb (25.4 kg)
The tool maps your length overall to a smooth baseline anchor mass curve used for recreational planning. It multiplies that baseline by a sail windage factor when you pick sail, then by a calm, moderate, or rough weather band. Results are rounded to even pounds for shopping lists. A second “storm” line applies a fixed upsize ratio so you can budget a heavier hook or dedicated storm gear where you cruise.
38 lb
≈ 17.2 kg — compare to locker space and windlass ratings.
56 lb
Use as a second anchor budget or upsized primary when forecasts worsen.
Share it with cruisers building ground tackle kits before a season.
Suggested hashtags: #Boating #Anchor #Marine #DIY #Calculator