This video documents an attempt to circumnavigate Washington's Bainbridge Island with a custom-built, autonomous boat. The vessel, constructed with a long, narrow hull for efficiency, is powered by salvaged 18650 lithium-ion cells and equipped with an autopilot and "weedless" propellers. The mission begins successfully, with the boat navigating out of the harbor and across shipping lanes overnight. However, the primary objective of a fully autonomous journey fails when the "weedless" propeller becomes severely entangled in seaweed, requiring human intervention. Though the mission is continued for data collection, a second major obstacle is discovered: an unexpectedly powerful 4-knot tidal current that the boat, in its power-limited configuration, would have been unable to overcome. The project concludes with an analysis of the boat's failures, identifying the need for a more effective weed-prevention system and a design capable of higher speeds to conquer the region's strong, unpredictable currents.
The Bainbridge Island Challenge: An Autonomous Boat Mission
0:00:02 Project Goal: The creator attempts a 35-mile (56 km) autonomous circumnavigation of Bainbridge Island using a custom boat powered by salvaged lithium-ion cells from a broken power bank.
0:00:59 Weed-Proofing: The boat is equipped with "weedless" propellers from Blue Robotics, as a previous attempt with a different boat failed due to seagrass entanglement.
0:01:46 Mission Launch: The boat is launched at 3:00 AM, set to autonomous mode, and begins its 15-hour journey at a target speed of 2 knots (2.2 mph), monitored remotely via a Spot Trace GPS tracker.
0:08:32 Signs of Failure: While following in a chase boat, the creator observes inconsistent GPS pings and telemetry data showing the boat's speed has dropped to nearly zero.
0:09:05 Autonomous Mission Failure: The creator intervenes and discovers a large mass of seaweed wrapped around the "weedless" propeller. This human intervention marks the failure of the primary goal of a fully autonomous trip.
0:09:47 Propeller Shortcomings: Post-mission testing reveals that while the propeller sheds some weeds at full throttle, it struggles with stringy varieties. The creator theorizes his exposed mounting configuration is less effective than a design where a keel protects the propeller.
11:41 Navigating Strong Currents: The mission continues for data-gathering purposes. The boat successfully handles boat wakes and turbulent water but struggles significantly against strong tidal currents, which cut its speed in half.
16:43 Mission Aborted: After completing over half the distance, the creator aborts the mission, citing that the autonomous goal had already failed and he was running out of time.
17:15 A Second Major Obstacle: On the return journey, the creator encounters a powerful 4-knot current that the autonomous boat would have been unable to push through with its power-saving throttle limits.
19:25 Final Conclusions: The mission highlighted two critical challenges: seaweed entanglement and powerful, unpredictable currents. The creator concludes that future success will require a more robust weed-proofing solution and a faster boat with a more efficient hull design to power through the currents.
Error: value error Invalid operation: The response.text quick accessor requires the response to contain a valid Part, but none were returned. The candidate's finish_reason is 1.