The MK-25/MK-58 are _____ water activated.

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Multiple Choice

The MK-25/MK-58 are _____ water activated.

Explanation:
Water-activated fuzes in these mines rely on the surrounding fluid to complete the firing circuit. Saltwater provides the ions needed to conduct electricity, so the MK-25 and MK-58 are designed to activate when submerged in sea water. Freshwater has far fewer ions and much lower conductivity, and distilled water is nearly non-conductive, making activation unreliable. By requiring saltwater, these mines stay safe in freshwater environments and become active only in sea water.

Water-activated fuzes in these mines rely on the surrounding fluid to complete the firing circuit. Saltwater provides the ions needed to conduct electricity, so the MK-25 and MK-58 are designed to activate when submerged in sea water. Freshwater has far fewer ions and much lower conductivity, and distilled water is nearly non-conductive, making activation unreliable. By requiring saltwater, these mines stay safe in freshwater environments and become active only in sea water.

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