Putting a bag over a propellor

[LittleSister]

only if you can't get it totatally covered . With no way of growth getting in there isn't much point as it will still get covered .

But with less light you will presumably get much less growth?

 

[AntarcticPilot]

But with less light you will presumably get much less growth?

Only of algae. A lot of fouling organisms aren't plants, so light doesn't affect them. Think barnacles, tube worms, sea squirts etc.

 

[sailaboutvic]

But with less light you will presumably get much less growth?

You will get plenty of growth deep below the water line .

 

[deep denial]

A long line that you keep hold of tied to the draw string of a suitable draw string bag (cheap plastic sports duffle bag style thing?) on the end of a pole, when the bag is over the prop pull the draw string. Not sure how you might attach the bag to the pole to enable you to recover it after it's deployed. Might work but easier I'd have thought to jump in with a bag & a bit of string...

How about a 'bag' made of two bits of material joined by velcro, with string attached to each side. In Spring just pull the string to separate the halves and pull them out:?

 

[jwilson]

Part of the way bags work is that they reduce water flow around the enclosed bits, letting the semi-trapped water inside absorb a higher amount of free AF biocide. Add in reducing light and bags work, so the big flat sheet pulled tight to the hull over the shaft and prop would probably help.

In Hong Kong some moored boats had full tailored bags under the hull whe moored. Did seem to dramatically reduce fouling on the hull, though the outside of the bags became weed and mollusc farms.

 

[sailaboutvic]

Part of the way bags work is that they reduce water flow around the enclosed bits, letting the semi-trapped water inside absorb a higher amount of free AF biocide. Add in reducing light and bags work, so the big flat sheet pulled tight to the hull over the shaft and prop would probably help.

In Hong Kong some moored boats had full tailored bags under the hull whe moored. Did seem to dramatically reduce fouling on the hull, though the outside of the bags became weed and mollusc farms.

not sure if that the case has there was No AF on my pro .
basically no fouling can get to my prop as it was all covered .