Case Study · Marine Engineering
Technomarine 84
Out-of-Water Works
Full haul-out mechanical & structural works on a Technomarine 84 motor yacht, Sydney
The brief
Hauled out for shaft seal failure — and a full once-over
This Technomarine 84 came out of the water with a failed PSS dripless shaft seal — a split in the bellows was letting water gush through into the bilge — with corrosion built up inside the coupling flange behind it. With the vessel already up on the hardstand, we used the haul-out to work through the running gear, hull and topsides properly rather than just chasing the leak.
Scope of works
What we did
Replaced the failed PSS dripless shaft seals
Full service of the main engines, gearboxes & generators
Multiple fibreglass hull repairs
Trim tab repairs
Swim platform repairs
Propspeed applied to props, shafts, rudders, skegs & trim tabs
Full antifoul application
Anode replacement across the running gear and hull
On the hardstand
Out-of-water, start to finish
The failed seal
The failed seal — water was gushing through a split in the bellows the owner had temporarily repaired with duct tape
Corrosion inside the coupling flange, exposed once we disconnected the shaft from the gearbox
New PSS shaft seal fitted, fresh clamps and bellows
Fibreglass, running gear & finish
Fairing a topsides repair, masked off ready to fair back
Twin shafts, skegs & props stripped back for service
Hull primed and painted, Propspeed applied, ready for launch