Seen the seminar and also just been reading the tortuous thread in
2000 - "More on Refrigeration", but it would not let me add a post, so
here goes.

However, what are the views on using the Frigoboat keel coolers?? - as
shown here with either the 35F or 50F Danfoss for a 80 litre freezer
box - top entry and underneath the floor in the "bilge".
http://www.penguinfrigo.co.uk/pdfs/K35F.pdf
Penguin in the UK have been using them for 10 years without any
problems.

Also looking at insulation and achieving an R value of 30. A
Kooltherm duct insulation (phenolic foam) has a k value of 0.018W/m.k
- which seems to be be pretty good compared with other products
located on the WWW, but the formula R = thickness in m/k value only
comes out at 5.5 for a 100mm/4 inch thick layer of foam. Or are my
sums amiss???
Also looking at VIPs and their cost in UK.

TVMIA.