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Two marine & boating tools, side-by-side. See which fits your task.
Marine & Boating
Estimate vessel draft from displacement, beam, and hull shape.
Open Draft CalcMarine & Boating
Reference for international maritime signal flags and their meanings.
Open Flag SignalsYour specific task is estimate vessel draft from displacement, beam, and hull shape. Open the page, drop your input, get the result — typically under a second.
Your goal is reference for international maritime signal flags and their meanings. Same approach: paste in, get the result, move on. No account, no upload.
Both tools live in the same category, so the choice depends on the exact subtask. Draft Calc focuses on estimate vessel draft from displacement, beam, and hull shape; Flag Signals focuses on reference for international maritime signal flags and their meanings. Try whichever description matches your goal more closely — they're both free.
Yes — both tools are free for unlimited personal use. The Pro plan unlocks higher limits and batch features but the core functionality stays free forever.
Absolutely. Many users chain multiple tools together — process a file with one, then feed the result into another. Nothing is uploaded, so chaining is essentially instant.
No. Both Draft Calc and Flag Signals work without signup. We only ask for an email if you decide to subscribe to a paid plan.