Shetland 4 Plus2 use for Coastal Cruising

[dellquay13]

Hi Locallad,
The permission comes a couple of days after paying £5 for lifetime membership.
Clive, thanks for the pics.
The large flat areas of hull look like it should be a planing boat, but a 90hp would struggle with the weight. The flatness would be prone to slamming when cresting swell I think, most displacement hulls have a much finer entry to slice into waves rather than bellyflopping on top of them.

[Clive]

Bit like old Mercs had a big steering wheel and lots of space to accommodate an oversize prosperous German driver!! The boat without engine is 1100kg. I have a 100L (same in kg) water tank, my 35hp Honda weighs 90kg, plus food, drink and toilet holding tank and say 4 adults at 75kg each, that's around an extra 500kg, plus fuel and anchor/s so some load to try and plane. Obviously you don't need 100L of water and how much fuel food and drink is up to you.

[Locallad]

The Hardy pilot 20 that I had was also RCD cat C with a 50HP four stroke Honda it had a top speed of 14 knots cruise 10 Knots 1400kg displacement max engine power 75HP I think if I achieve those speeds I'll be happy I'm not a boy racer look at it as a gentleman's cruiser

[dellquay13]

I'm no speed demon, my F4 will make 25kts, but I prefer 5kts or 15kts.
The 4+2 hull looks like it is built either for planing on flat water, or more probably for lateral stability at rest, its got a really shallow deadrise, about 10deg, and big flat areas right up to the edge.
I don't think it would slice smoothly through swell, but bellyflop over it.
My very first boat was a Dellquay Dory which was like that, on a flat day it was an exciting 30mph 13' shoebox lid that would barely tilt if you sat on the gunwhale to fish, but in a swell it crashed down enough to knock the fillings out of your teeth.

[dellquay13]

The motor boat forum at ybw.com might have first hand experience of the 4+2 at sea.
It has more traffic than this forum recently

[Clive]

Most are asleep here!!

[Locallad]

Not having any knowledge of deadrise only am I right in thinking its taken at the transom of a boat. I've found this video of a 2013 Shetland 4 Plus 2 on a trailer https://www.youtube.com/watch?v=tIuSn1Tql9w pausing at the transom at a guess I would say the deadrise is 20 deg plus. For rough sea I believe a deadrise of 20 35 deg is ideal 10 to 17 deg is bad

[dellquay13]

Shetland boats are the best source of info on exact deadrise and hull form if you are seriously considering a new build. The firm may have changed since Clives boat was built 32 years ago

[Clive]

All right dellquay!! If it was a car it’d be tax exempt but somehow on the water it’s quite average! I’ve also spotted you on YBW forum and at last worked out your name - nothing to do with Only Fools and Horses then

So looking at the 2013 boat on YouTube it looks to have a more pronounced V (is that a dead rise?) than my 1989 boat. Maybe the moulds were sold off at some point and the hull is different. It’s otherwise the same except details like a fibreglass swim platform (mine is stainless and wood) and the sink and cooker swapped. It’s a nice layout. I’d only ever go coastal in flat water, but I’m not used to being at sea in small boats. Quite good at locks though!

[dellquay13]

Yes Clive, I'm on Ybw a lot. You, me and Vreagh are like the last elder statesmen active on here, but I'm a newbie with my Yachty questions on ybw...