Looking for a loud whistle: Does it make a difference if it's metal or plastic?

Metal – lasts much longer, and stands up better to the vibrations.

@jca Best, loudest I have seen is made by The American Whistle Company. About 100 db. Use it on telemarketers. Keep handy for emergency to summon help. 2 or 3 dollars.

I agree metal is the best for long life and reliability.

Once you have one in mind, don’t forget eBay, especially if you’re looking for multiples.

I have 5 of the Windstorm one on each boat, car and one for the wife when she is out alone. It supposedly can reach 130 db and can be blown and heard underwater.

I’m not a whistle expert. But I hypothesize it’s loudness has more to do with design than material. Metal would NOT last longest if the intended purpose was nautical and in salt water. Plastic doesn’t oxidize. However, some plastic whistles have a metal bead inside which over time will also corrode in salt water. Metal will probably be more expensive, like if it’s a basketball ref’s…