tab trim

[canecrazy69]

what dose the tab trim do its on the bottom of the foot above the prop

[Sequoiha]

It serves two purposes, first it is a sacrificial anode. second it is a front end alignment of sorts,, typically if the boat pulls to the left you can adjust the tab in the direction of the pull, the water pressure on the tab during forward motion will push the engine back the other way. it was very useful on older cable steering systems with out feed back.

[rodbolt17]

actually 3 if on a v4 or v6, it also directs additional cooling water to the prop hub to help prevent hub failures.