a good shower - how?

[Grehan]

Our previous one was a spray head on a flexible tube, part of the basin tap-set, and produced a weak dribble. Hopeless. So one of the things we'd like to do, is create a really good shower on-board, almost as good as a decent land shower - without spending too much (obviously) (using normal DIY products rather than 'marine' ones, maybe). We have a reasonable amount of room to do so.
Any tips or recommendations/pitfalls gratefully received on topics of (hot) water supply/volume/pressure, additional pump (?)(or otherwise), shower mixer/head, general boat plumbing, etc. Thanks.
[edit]
As an ancillary question - how much hot water would an average shower use?

 

[Talulah]

I found replacing the tap and spray head made a world of difference. It cost about £15 to buy one off ebay. Boat shower is as good as most marinas but with no queue!
(The shower had been good a couple of years a go but very slowly got worse. For the £15 it was well worth it.)

 

[michael_w]

I've recently replaced all the brassware in my boat. All the stuff I used is readily available from a half decent plumber's merchant.

I replaced both the galley sink and heads basin with Bristan Java monobloc basin mixers. A domestic kitchen mixer tap is just too large for most boats.

I fitted a proper thermostatic shower valve. Mira Minilite, just about the smallest thermostatic mixer I've seen. Rather than use the supplied hose and handset, I needed one that would self stow in the locker.

Penguin Engineering have a good stock of hoses and shower heads. I chose one with a trigger switch so "Navy" showers are possible. All the plumbing was done with Polypipe pushfit fittings.

SWMBO and I shower on board in preference to the dubious delights of the ablution block.