seriousdetecting.comAnswer
Apr 22, 2026 - 01:15 PM
A waterproof metal detector handles the physical water - it will not be damaged by saltwater submersion within its depth rating. Performance in saltwater, however, also depends on the detection technology: single-frequency VLF machines generate constant false signals in wet salt sand and surf zones due to salt conductivity. For beach and saltwater use, you need both full waterproofing and simultaneous multi-frequency technology. A fully waterproof single-frequency machine will survive saltwater but will not detect effectively in it. See beach metal detectors for machines that handle both.
