Skinfitting placement in the shaft/P-bracket area?

[vas]

good morning all and yet another Q from me...

slowly finishing with the lazarette cleanup/scrapping/painting and I remembered that I wanted to relocate a skinfitting which is currently between stbrd shaft exiting in the water and p-bracket and 80mm offset towards the keel. Actually more towards the shaft than p-bracket...


Now, first Q is: is that acceptable placement for a skinfitting? Was originally for the genny intake (actually sits UNDER the genny, difficult to access, not enough space to get a seacock straight on top of the skinfitting, no chance of fitting a strainer there either. Genny is currently served from a skinfitting next to the engine intakes so nicely organized together with strainers and easily accessible.

Second Q is that since I want to have a pickup point for my watermaker which is going to be placed in the lazarette, I'd rather have an easily accessible skinfitting further aft which means we are getting in the propeller area which I guess is no good at all. So is it good practice to have skinfittings back there?

Would it be acceptable/OK to have a skinfitting in the same place but 500mm aft so around 200mm in front of the p-bracket? Area is solid and well reinforced around there.

Could go slightly silly and fit it on the transom just above the keel, should be safe and easily accessible (but never seen it done!) Further it's unlikely I'll be able to use the watermaker underway if I place it there.

Or could just buy a longer wire reinforced hose and Y off the genny seacock and be done with (although watermaker installation suggest that a separate intake is used JUST for the watermaker, and I'm not keen on long pipe runs in general).

The following two pics show the area in question (crappy pics from the first viewing complete with flaking antifoul )

opinions appreciated!

cheers


V.

 

[MapisM]

I'd rather have an easily accessible skinfitting further aft which means we are getting in the propeller area which I guess is no good at all.
...
Would it be acceptable/OK to have a skinfitting in the same place but 500mm aft so around 200mm in front of the p-bracket?

Yes.
Your concern that it can create turbulence affecting the prop efficiency is correct in theory but negligible in practice.
In fact, it can only create a tiny fraction of the P-bracket turbulence, and the upper part of the props is bound to deal with a less "solid" waterflow anyway.
I would just stay as close as possible to the keel (i.e. as low as possible, in other words).

 

[vas]

Yes.
Your concern that it can create turbulence affecting the prop efficiency is correct in theory but negligible in practice.
In fact, it can only create a tiny fraction of the P-bracket turbulence, and the upper part of the props is bound to deal with a less "solid" waterflow anyway.
I would just stay as close as possible to the keel (i.e. as low as possible, in other words).

thanks MM,

yes, actually I'm planning to streamline the P-bracket base which sits on the hull creating a 20mm step, a wedge shaped piece of ply and some epoxy will get that nice and smooth.
Checked again, could place it 200mm in front of the p-bracket and 500 off centre. Should be well clear of most turbulences I recon.
Now, need to bring the watermaker and juggle the placement of the passarelle pump/solenoids and the watermaker pump/motor in there.
If it's raining tomorrow it's the job to do

cheers

V.