Drive-In Boatwash ...

That feels like it could be a good idea, especially if can be done in <15 mins - install at the fuel pontoon so can top up with diesel, water and a bottom scrub in one go. I'd be curious to see how it works in real life.

Worth a shot - especially if you can dive down to take before & after photos
 
There used to be a similar one at Haslar Marina (probably 10 years ago). It didn't last long for some reason, I remember hearing reports that it wasn't very effective but I never used it.
 
Two different operations, the Sealift lifts the boat out of the water where it is cleaned as normal with old anti foul collected. The boat wash is/was an under water clean by two circular brushes driven by water pressure the problem was clarity of the water in the UK it was not possible for the operator to see what the (robotic) arms were doing or how clean the hull was.
 
Surely it is still there?

Sealift3
No, the Sealift is different and is still there (I used it a few weeks ago and it's a great service). The boatwash in the OP picture is rather like an underwater car wash with rotating brushes cleaning the hull. There used to be one of these in Haslar but it didn't last for long.
 
No, the Sealift is different and is still there (I used it a few weeks ago and it's a great service). The boatwash in the OP picture is rather like an underwater car wash with rotating brushes cleaning the hull. There used to be one of these in Haslar but it didn't last for long.
I imagine the problem of delicate excrescences under the hull like log paddle-wheels is even worse than aerials in car washes...
 
The problem, as mentioned many times on these forums , is if the "wash" is too aggressive, the precious antifoul is eroded and future fouling will become worse than ever.
 
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The problem, as mentioned many times on these forums , is if the "wash" is too aggressive, the precious antifoul is eroded and future fouling will become worse than ever.

I can relate to this. An enthusiastic five year old and a nine year old with a pressure washer 'eroded' my antifoul a fair bit during our mid season spruce up yesterday. Assuming by eroded you mean completely removed about a third of it.
 
A new boat has arrived at the marina that lives on a submersible 'lift'. Drive the boat into the cradle and engage the pumps and the hull is lifted clear of the water. It looks a lean mean racing machine.

After a lift and jetwash I have two sling marks along with every other boat we pass.

I think the drive in boat wash would give a good result for us copper coated hulls.
 
I think the drive in boat wash would give a good result for us copper coated hulls.

Should be fine.
Copper is good for other things too. Do you greet slugs in your kitchen at night ?
Gardening programme suggests some 1/2" copper pipe at foot of outside door works fine.
Something to do with electrical conductivity . They don't like it you know !
 
Never seen the one at Haslar -the lift is there still now taken over by the boatfolk from the previous operators who were well regarded however not all vessels eg dufour were suited to the lift as don’t fit somehow . That said would not a keel scrubbing machine cause damage to the vessels keel illustrated?
 
Never seen the one at Haslar -the lift is there still now taken over by the boatfolk from the previous operators who were well regarded however not all vessels eg dufour were suited to the lift as don’t fit somehow . That said would not a keel scrubbing machine cause damage to the vessels keel illustrated?
Only if the keel were still attached.
 
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