One other way to secure something in a wet location like the bilge is to use 3M Dual Lock.  It is a durable plastic alternative to velcro and it works in wet environments.  It's powerful enough to keep things put but you can still detach when needed.  I used that to secure a battery power water alarm in the bilge and another one in the lazarette.  The alarm is the kind that you could use above a sump pump in a house basement.  My boat has a dry bilge and lazarette so I'd like to know right away if that changes. Also, the alarm is loud enough so if there was a problem with the boat as it sits at the slip, any of my slip neighbors would hear and they know how to get into my boat if needed.  My boat already had a bilge pump installed by the prior owner.  I'm not entirely sure how it's attached underneath. It's output hooks into the sink drain discharge.

Jesse Shumaker
S/V Zephyr

On Tue, Oct 5, 2021 at 1:37 PM Chris Geankoplis <chrisgeankoplis at gmail.com>
wrote:

> Yes I wasn't clear. Graham was more articulate, though I thick some PVC
> board would work well and you wouldn't need to epoxy it.
> Chris G
>
>
> On Tue, Oct 5, 2021 at 3:14 PM Graham Stewart <gstewart8 at cogeco.ca> wrote:
>
> > If fastening the pump to the bilge floor is the issue another alternative
> > to using 5200 on the pump directly would be to epoxy a piece of plywood
> to
> > the bilge and screw the pump to the plywood. The plywood pad should be
> > totally encapsulated in the epoxy so that it doesn't rot. The advantage
> of
> > using the plywood is that you can remove the pump by removing the screws.
> > It might not be possible to remove the pump without destroying it if you
> > use 5200 directly. The disadvantage of using a plywood pad is that the
> pump
> > will be off the hull by the thickness of the plywood and therefore not
> > drain as well.
> >
> > Graham Stewart
> > Agile, Rodes 22, 1976
> > Kingston Ontario
> >
> >
> >
> >
> >
> >
> >
> > -----Original Message-----
> > From: Rhodes22-list [mailto:rhodes22-list-bounces at rhodes22.org] On
> Behalf
> > Of Chris Geankoplis
> > Sent: Tuesday, October 5, 2021 12:08 AM
> > To: The Rhodes 22 Email List
> > Subject: Re: [Rhodes22-list] Hull Thickness
> >
> > Perhaps it is a question of using screws to secure the pump. Don’t. A bit
> > of PL 5200 will do the trick.
> > Chris Geankoplis
> > ENOSIS
> > Rhodes, Greece
> >
> > On Tue, Oct 5, 2021 at 3:17 AM Graham Stewart <gstewart8 at cogeco.ca>
> wrote:
> >
> > > Normally you would want the thru hull for a bilge pump as high up on
> the
> > > hull as possible with a loop in the discharge hose. My discharge is
> above
> > > the galley where the hull is about .25" thich as I recall. Maybe I
> don't
> > > understand what you are asking.
> > >
> > > Graham Stewart
> > > Agile, Rodes 22, 1976
> > > Kingston Ontario
> > >
> > >
> > >
> > >
> > >
> > >
> > > -----Original Message-----
> > > From: Rhodes22-list [mailto:rhodes22-list-bounces at rhodes22.org] On
> > Behalf
> > > Of
> > > Joe Dempsey
> > > Sent: Monday, October 4, 2021 6:11 PM
> > > To: rhodes22-list at rhodes22.org
> > > Subject: [Rhodes22-list] Hull Thickness
> > >
> > > I'm looking to mount a small bilge pump in the lazarette of my Rhodes.
> > I'm
> > > having difficulty finding articles in the new Archives. Too many pages
> to
> > > scroll through and click. I've found a couple of articles indicating
> the
> > > thickness 12" or more from the centerline. Can anyone tell me the
> > thickness
> > > near the centerline (6" or less)?
> > >
> > >  Thanks!
> > >
> > >
> >
> >
>