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Two marine & boating tools, side-by-side. See which fits your task.
Marine & Boating
Reference for VHF marine radio channels: calling, working, and emergency frequencies.
Open VHF ChannelsMarine & Boating
Estimate wave height from wind speed, fetch, and duration.
Open Wave HeightYour specific task is reference for vhf marine radio channels: calling, working, and emergency frequencies. Open the page, drop your input, get the result — typically under a second.
Your goal is estimate wave height from wind speed, fetch, and duration. 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. VHF Channels focuses on reference for vhf marine radio channels: calling, working, and emergency frequencies; Wave Height focuses on estimate wave height from wind speed, fetch, and duration. 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 VHF Channels and Wave Height work without signup. We only ask for an email if you decide to subscribe to a paid plan.