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Sailing Uma · video

Turning our Monohull Into a Catamaran (Without Adding a Hull) | Step 468

22 December 2025 · 24 min · 161K views

Crew sands monohull hull near propeller, blue tape guides

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What this video covers

Dan and Kika of Sailing Uma install dual electric motor controllers and a liquid cooling system for their Oceanvolt propulsion setup.▶ 1:42 To maximise space in the tight engine compartment, they offset the motor controllers from the bulkhead using custom-welded brackets, allowing cables and plumbing to route behind the units.▶ 0:18 They install Vetus cooling fins through the hull into the watertight "ocean vault" compartments, opting to seal them with Sikaflex rather than antifouling.▶ 11:32 The cooling circuit uses a pump mounted to the bulkhead with 1.5-inch hose clips.▶ 14:25 After wiring the phase cables and power cables, they use the Victron Servo VRM system to allow remote configuration by Oceanvolt technicians, successfully syncing the new battery bank with the motor controllers.▶ 20:29 The installation concludes with the mounting of throttle pods in the cockpit.▶ 17:59 The motors and controllers successfully initialise and spin during a dockside test.▶ 22:24

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