[–] [deleted] • 1 pt Twain = 2 fathom = 12 feet. 12 feet is "safe" water for river steam boats Mark Twain~ Measure to safe depth (1 twain). Twain = 2 fathom = 12 feet. 12 feet is "safe" water for river steam boats Mark Twain~ Measure to safe depth (1 twain). link
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