And underwater, with ordnance onboard?” He gave a bleak half-shrug.

“Factor in system inefficiency and at H2ONU’s continuous hydrogen output” he continued, rubbing his jaw, “and assuming a little leakage through the fittings…If Tian took your full five-gallon jug plus the internal gallon, that’s more than enough to flood the entire overhead with hydrogen.” He finally met Ray’s eyes. “Assuming my estimates are right, that sub’s primed to blow in about forty-five minutes after they seal the hatch. And underwater, with ordnance onboard?” He gave a bleak half-shrug. “Kill radius of roughly a thousand yards.”