Reversing Entropyvideo
Watermaker Failure Almost Kills Solo Sailor, Its not what you think 😯
May 13, 2025 · 8 min · 8K views
What this video covers
A watermaker membrane failure on a solo Pacific crossing contaminated an entire 200-liter emergency water reserve with saltwater before the sailor noticed anything wrong.4:23 The failure mode was not gradual — the membrane failed completely and instantly, and because the watermaker lacked a salinity sensor on the outlet, it pumped high-salinity water directly into the main tank for hours.5:23 The sailor's carefully maintained 50% reserve, intended as a backup if the watermaker failed, was destroyed by the watermaker itself.5:18 With no Starlink or satellite comms, only an EPIRB and five liters of life-raft water remained.4:01 The sailor survived because he carried a spare membrane and got the watermaker running again.6:55 Paulo uses the scenario — set on a performance catamaran where weight limits rule out carrying large extra water stores — to illustrate a cascade failure: one component's failure silently eliminates the backup for that same component.2:16 The fix is to plumb the watermaker output into a dedicated production tank and transfer manually to the main tank only after tasting or testing the water, so contamination can never reach the reserve.7:40
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