[HOTFLASH]

Chica,

There is very little room for an anode, other than a thin donut collar type on the 1" shaft of a Tartan 27. Boatzincs.com carries "LC-3 Micro Thin Collar Zinc Anode - 1" Shaft" which is 11/16" thick. Install it on the shaft just forward of the prop leaving a margin on both sides. But it could be your new prop takes up more space on the shaft that the original prop, leaving no room for even a thin anode.

I have a Tartan 27 in fresh water with original prop and I have not found a magnesium nor an aluminum thin (11/16") anode for a 1" shaft, so I have to use a 25mm one designed for a Beneteau. It only comes in zinc or aluminum. I use the aluminum, and the 25mm one fits fine. Boatzincs.com has those too.

Mary