City Sailingvideo
Training Sea Cadet Instructors | RS21 Keelboat Sailing – Welsh Harp
March 1, 2026 · 2 min · 150 views · Welsh Harp (Brent Reservoir)
RS21 keelboat heeling fast under spinnaker on Welsh Harp
What this video covers
Paul, host of the Isle of Dogs Sea Cadets unit, reports that he, Jack, and Olivia completed a keelboat instructor qualification weekend at the Sea Cadets base at Welsh Harp Lake in West London.▶ 0:06 The training was run by Ian and focused on the RS21, a self-righting keelboat that carries four cadets per boat.▶ 0:06 The RS21 features an asymmetric spinnaker that accelerates the boat quickly in moderate wind, and an electric engine for maneuvers in calm conditions.▶ 0:43 Welsh Harp Lake is compact enough that the spinnaker must come down almost immediately after it goes up to allow room for the next maneuver.▶ 0:47 The unit plans to use the boats on booked Monday evenings for seamanship instruction covering sailing, anchoring, and alongside maneuvers, as well as match racing.▶ 1:19 Welsh Harp is reachable from Canary Wharf via the Jubilee line and a bus in just over an hour.▶ 1:03 The unit also runs dinghy sailing, windsurfing, and kayaking, and is actively recruiting adult volunteers.▶ 1:50
Boats in this video
More from City Sailing
From City Sailing — see the channel’s boat, crew, and every analyzed video.