Project Brupegvideo

How our Ducted Propeller Works & Applying Propspeed? - Project Brupeg Ep.399

April 20, 2025 · 25 min · 30K views · Gladstone

What this video covers

The crew of the vessel *Brewpeg* performs maintenance on the boat’s Kort nozzle and propeller while hauled out at Port City Fabrications in Gladstone.0:02 To address pitting on the nozzle’s leading edge caused by barnacle abrasion, the crew applies Jodafair epoxy fairing compound, sands it to a smooth airfoil profile, and coats it with Jodamastic 90 epoxy etch primer, a chlorinated rubber tie coat, and black antifouling paint.0:44 The Kort nozzle, which features a 52-inch mouth tapering to a 46-inch propeller diameter, increases thrust for slow-moving vessels by accelerating water flow and provides physical protection for the propeller against debris.3:46

The crew then applies Propspeed to the propeller, a process requiring precise timing to ensure chemical bonding between the etching primer and the clear silicone topcoat.7:49 They use a specialized curved roller to ensure full coverage on the propeller blades.16:16 Final haul-out tasks include installing a new ball valve on a skin fitting, cleaning the engine room bilge, and draining water tanks to reduce weight for the lift.24:00

Watch on YouTube

More from Project Brupeg

What caused the steering to fail - Project Brupeg Ep.463Oct 2026CHAOS! & our first Night Time Trailer Haul Out - Project Brupeg Ep.462Sep 2026Look, It's possible we should have cleaned this before now... Project Brupeg Ep.461Sep 2026The Ridiculously Powerful Davit Winch - Project Brupeg Ep.460Sep 2026

From Project Brupeg — see the channel’s boat, crew, and every analyzed video.

The Sailing Directory Newsletter

One email with the fleet's best finds — the moments, boats, and stories worth your watch time. Enter your own address to get your own copy.

Report an issue