Onboard Tangaroa - The Never-Ending Sea Trial

The Never-Ending Sea Trial is a hands-on boat project channel documenting the real-world modernization of Tangaroa, a 1969 aluminum motor yacht, into a Hybrid-Electric Exploration Yacht.

We focus on practical yacht engineering and long-term upgrades — engines, propulsion, electrical systems, batteries, solar, steering, cooling, fabrication, and problem-solving aboard an older boat. This isn’t theory or quick makeovers. It’s real work, done onboard, with real consequences.

Most of the projects are tackled by us, without a production crew, and shown honestly — including the mistakes and lessons learned along the way. Tangaroa is our home, our test platform, and our ongoing sea trial.

If you’re into diesel engines, marine electrical systems, repowers, modern tech in classic boats, and seeing how things actually get done, you’re in the right place.

Welcome onboard.