When new boat owners are ready to register a name and paint it on the hull, they usually compare spellings on paper. But a name can turn into another vessel’s name through wind, engine noise, and distorted VHF radio—and the problem may not surface until they are already at sea. Owners enter several candidates, select their usual cruising area, languages, and desired number of testers, then launch a short blind-listening call test. The product mixes each candidate name into varying levels of sea wind, engine, and radio noise, then plays them in random order to dock workers, fellow boaters, or online volunteers. Listeners simply type the name they heard; they do not see the correct answer first. A dataset of 50,000 existing boat names supplies phonetically similar distractors, specifically testing whether a candidate sounds too much like someone else’s vessel. When the test ends, the owner sees more than an abstract score: the actual mishearings, the syllables most often lost, spellings listeners get wrong, and the existing name most likely to cause confusion. If a name performs very differently in English and the local language, the report separates the results, making it easier to weigh the hull spelling against the radio call name. The first version is limited to pre-naming intelligibility tests. It does not replace maritime registration review or determine whether a name will be approved. It turns “Does this name sound good?” into a practical, playful radio call test, so owners can learn whether it will be heard clearly before the paint goes on.