Lots of interesting feedback. Thanks.
The Cruiser 18 has 2 queen size double cabins, each with it's own ensuite toilet and shower
and 2 single
cabins with a shared toilet and shower
. The first one will have a bath. The saloon
is 5.4m x 3.2m/16' x 10' and has fixed seating for 8, with temporary seating for another 8. Outside, there is seating for >20. It is not so much the total space available, but how it is used.
position can be inside the cabin
, fully sheltered with the lee facing door open or shut, or outside. Both use the same steering wheel
, which pivots on it's lower cog.
Extra sun protection can be added, but is a trade
off with being able to see the sails
and the horizon. On the Cruiser, you can see everything, while still being sheltered. And you are not isolated from the rest of the crew, sitting uncomfortably or getting a stiff neck.
balance is not a problem. The 2 rudders are mounted fore and aft and the front one can be lifted to improve balance. On the bigger harrys, no one bothers. The Melbourne proa has a lot of windage on the ww hull
, smaller than normal rudders and a large, roachy main. This combination makes the boat want to round up in very light air. It is not a problem on any of the others. The recent boats are schooner rigged to give more space in the lee hull
. A side effect of this is to give easier balance options than lifting the rudders.
Proa steering is an ongoing process that has involved some failures and dead ends. It is easy to do it using standard steering set ups, but these are not ideal. The requirement is for rudders that 1) can be lifted for shallow water
sailing, sitting out storms or balance 2) kick up in a collision
or grounding and can be quickly and easily returned to sailing position 3) have no holes below the waterline 4) are big enough to eliminate the need for daggerboards, their cases and holes in the hull and 5) work in both directions. This has been achieved on the Cruiser, at the expense of aesthetics and a little more drag, although this is disputable.
All the boats sailing have the motion and speed expected of the longer lee hull. The motion upwind in waves is much nicer than in a cat as both bows hit the waves at the same time, so you don't corkscrew over them.
Unknown quantity? The boat in the video at
is sailing at 10 knots in 10 knots windspeed under main and jib
. In the second half they are doing 15 in 15. The crew are totally relaxed, the steering balance perfect. There are not many videos of cruising cats doing this. With the helm
locked, this boat steers itself for long periods upwind and reaching. Later designs have finer bows and less exposed rudders.
An overloaded 12m/40'ter Harry |
crossed the Tasman, including a decent gale. They broke a ring frame which should have been a bulkhead, but otherwise no problems.
A 7.5m/25'ter solo cruised extensively up and down the windy, exposed south and west Australian coasts, with no boat related problems.
I have been sailing my 25'ter for 10 years experimenting with rigs, rudders and hull spacings. Currently it is a foiling (almost) kite boat. There are not many mistakes
I haven't made, nor options I haven't tried. These (and the steering developments) are all discussed on the web page or in the harryproa chat group.
Why a proa instead of a cat? Cheaper, easier, safer, faster. See "why a harryproa" in the News section of www.harryproa.com
for explanations of each. Some of them would apply to a cat with unstayed rigs, but given how few of these there are, I think the comparisons are relevant.
The big difference with the Cruiser is not so much that it is a proa, but the build method. We have just finished the lee hull plans. Everything, (doors, hatches, bunks, shelves, bulkheads, hull, decks, local strengthening) is infused, except the 300mm collision
pieces on the hull ends which are polystyrene with a layer of glass over them.
The bulkheads, frames, shelves, sink unit, steps and lockers glue in to slots which are included in the hull infusion. A tailored joint allows the 2 half hulls to also be glued together.
There is no sanding
, grinding, filling, fairing, wet laminating, bogging, filletting, polishing or cutting of cured glass apart from the end pieces. All exposed edges are glassed and hatches and doors are made as part of the panel in which they will fit. Rebates and holes for windows, taps and sinks are included, along with hidden conduits for wiring
The glue is applied with a mixing head
dispenser, the only contact with sticky stuff is scraping off any excess which is squeezed out of the joins and bulk mixing for the infusions.
The finished product is ready for undercoat, inside and out.
The set up time for the laminate is also much quicker as all the location measurements are made on the flat. There are no in hull measurements, aligning of bulkheads or making them vertical.
The savings in materials and build time are huge and the building is all done without sticky mess or dust. This is significantly different to the method used on the Kelsall
proa that Ballotta launched last week. It should also be significantly cheaper, and lighter.
Doing something a second time is quicker than the first, for sure. And reusing a mould/strongback etc is quicker than making a new one. But this build method is quick enough that the differences in actual time are relatively small and more than offset by the materials saved in the shorter hull, and the extra space possible in a hull that sees no sailing loads or equipment
(masts, rudders) and is never to leeward so does not have to be as sleek.
I don't know what a conventionally built 30' cat would cost, but if you look at a detailed build blog for a cruising cat and eliminate all the work and materials outlined above, the build cost of the Cruiser 18 will be comparatively low.
Unlike many designers, I really appreciate interaction with forums
as they draw on a very wide base of experience. However, unsubstantiated statements are pretty pointless. If you disagree with what is said and expect an informed answer, then please give reasons, facts, experience, numbers, calculations, theories, etc. Thanks.
Any other questions, please ask.