Mystery bilge hose

[smthng]

There's a gray (maybe originally black) corrugated hose in my bilge. Can anyone identify it? What's it for and where's it go? That may become my wiring conduit for my GPS transducer and new bilge pump if no one talks me out of it.

It's the one in this picture with nothing coming out of it... It's on the starboard side, outboard of the starboard shaft (which is the black hose with blue "marine" tape and clamps on it).

 

[Andy S]

That looks like the sheath that goes over the steering & bucket cables. It is the same thing used to protect wire runs.