SEA TRIALS! Didn't Go as Planned, BUT We are Still Smiling Anyway!... Ep 441

Name: SEA TRIALS! Didn't Go as Planned, BUT We are Still Smiling Anyway!... Ep 441
Uploaded: 2026-04-23T16:37:04.000Z
Duration: 33 min
Description: The crew identifies that their new Yanmar 4JH110 engine is under-propped after failing to reach target speeds.

23. april 2026 · 33 min · 42K visninger · Hout Bay

Nanji 2 glides harbor with crew, dog, and mountain backdrop

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After a nine-month refit, the Tayana 47 CC *Nanji 2* completes its initial sea trials in South Africa following the installation of a new Yanmar 4JH110 engine.1:38 During controlled tests in Hout Bay, the crew monitors engine performance at varying RPMs while motoring upwind and downwind.2:38 Despite the engine running smoothly, the vessel fails to reach expected speeds at high RPM, leading the crew to conclude the boat is under-propped.3:59 The refit also includes a reorganized engine room, where the crew relocated the freshwater pump and the secondary alternator's external regulator to separate electrical components from water sources.8:02 During a subsequent overnight anchorage, the vessel encounters unexpected 40-knot katabatic gusts, forcing the crew to abandon the anchorage at 3 a.m. when the boat struggles to make headway against the wind.25:20 The crew ultimately diverts to the V&A Waterfront in Cape Town to seek shelter and continue testing.26:05 Proper engine-to-propeller matching remains essential for achieving expected performance under load.