I don't think having a feed hose connected is de riguer for a day tank. As
I recall when the term is used for daily water ration it is often described
as something as simple as a one gallon jug. In the case of Thom's OB tank
however there would have to be another, presumably larger main tank
involved. If the OB tank was the only one on board then it wouldn't be the
day tank but the main fuel supply. Perhaps a betterway to describe that
would be using a five gallon fuel can (main tank) and the little tank atop
something like a SeaGull. If you stated that was your daily ration then it
would be a day tank. No feed line involved but the resulting spills would
surely get seventeen agencies gathered round for a MARPOL violation!

No points needed. I'm giving Katy a chance to catch up for the next month
at least!

M.

"Bart Senior" wrote in message
. ..
To answer your question, I'd say no, because there is no
other tank feeding it. Certainly the opposite viewpoint
could be argued.

Thank you Thom, because you just gave me the solution
to a problem. An outboard tank could be modified to be
used as a day tank for a diesel engine and give you a fuel
gauge too!

I can't think of any sailboats I've sailed that had a fuel gauge.
Most of the time I've banged on tanks and judged by sound
or used a measuring stick.

Even without a gauge, a red plastic outboard fuel tank is
translucent enough to judge ift you have enough fuel
to prevent the hassle of bleeding a diesel fuel system.

I've been thinking about mounting a day tank in ECHO and
you just gave me the cheap solution I was looking for! I
just need to figure out how and where to mount one.

Thom Stewart wrote

Question Bart?

Would you consider the remote fuel tank on an Outboard Aux a day tank?

Ole Thom