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Two marine & boating tools, side-by-side. See which fits your task.
Marine & Boating
Calculate effective boat speed accounting for current speed and direction.
Open Current SpdMarine & Boating
Estimate hull displacement from dimensions and block coefficient.
Open Hull DispYour specific task is calculate effective boat speed accounting for current speed and direction. Open the page, drop your input, get the result — typically under a second.
Your goal is estimate hull displacement from dimensions and block coefficient. 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. Current Spd focuses on calculate effective boat speed accounting for current speed and direction; Hull Disp focuses on estimate hull displacement from dimensions and block coefficient. 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 Current Spd and Hull Disp work without signup. We only ask for an email if you decide to subscribe to a paid plan.