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I feel that electric is a poor option for a motor sailer because you won't be able to operate it unless the diesel is running. A 40' motor sailer would need a 40hp diesel. You just don't have independent charging options for that sort of draw unless an engine is used, and if that engine is going...

Brian here is a link to a response on Lagoon's website. https://www.catamarans-lagoon.com/support Perhaps this topic deserves its own thread where we can support owners and repairers, and turn it into inspection and repair instructions in case Lagoon closes?

You could probably join Bernd Kohler's group chat thingy and ask that question, but I cannot see why the sail could not be temporarily shortened during course changes if it is difficult to manage. This link is only to point to the K-Designs chat group...

https://duckworks.com/eco-520-plans-pdf/

Another tech being employed for fuel saving on ships is rigid wingsails.

there is no reason it can't.

Those are generous limits Montero. Here we get 5.5m & 5hp before the hand goes out for registration money, velocity limited to 10Kn also. Some are having custom decals made to detune their motors to 5hp, as it seems inspectors don't bother with model/serial details - see no evil. I think you...

Chop longtails use surfacing props not jets.

Another example of the "Marine" surcharge. Corporate ethics are carcinogenic.

Probably the simplest way to power a small boat with any suitable engine is a transom mounted Thai style longtail. There are safety considerations with this, so do good homework before the tools come out. Check out Thai racers, they move. Also a 10' Vee hull would have to be extremely well...

Hard to say about performance, monohull racers seem to prefer hard chines on flat bottoms, but there is a sea keeping element there.

Thanks for the info folks. The boat must be 10 years old in that video and looks as new. She slips along nicely for a 17' cabin cruiser too. As far as I'm aware, Mark Gumprecht is neither a qualified yacht designer nor shipwright, yet appears to excel at both tasks. He also has built and used...

There are far more ~3l diesels around here than 2l ones, everyone needs a huge dual cab utility to make them feel better about their deficiencies. The underpowering must be an EU thing as most vehicles here have appropriately sized engines. Toyota was selling Landcruiser 4WD vehicles with V8...

It's a small vehicle and the engine is quite adequate 95% of the time. This car has been super reliable, tows up to a tonne easily and the fuel economy is welcome with the distance I cover. The bloke that inspects it for registration says the diesels are great, but run from petrol models. Maybe...

Attitude generally refers to the bow position, or longitudinal trim. Regarding the best bow attitude under way, it is more to do with the engine RPM and boat speed than a particular angle. The idea is to get the boat planing as quickly as possible by trimming the motor in for the initial...

I haven't driven a truck since the late 1980s, but have a Kia Sportage with a 4cyl 2 litre diesel engine. During general driving throttle response is good and any lag is so minor as to be unnoticeable. It is different though in situations requiring heavy acceleration, the lag is severe enough...

You can play with that trim rod for best hole shot attitude, the worst that will happen is the bow will rise too far on initial acceleration and cause "plowing", basically pushing a fat blob through the water instead of planing most of the hull above it. It would have been left there from...

Could we maybe leave the personality clashes at home? You have despoiled the thread of a kind and generous person by sounding like a bunch of fish wives, and that impression of industry professionals will remain here as long as this website is active.

On this thread, member @sailhand is discussing a foam core epoxy glass catamaran tender he has developed and was selling plans for (and may still be). Inflatables only shine in the store before purchase. https://www.boatdesign.net/threads/catamaran-tender-to-replace-rib.50834/page-3

It's a multihull, high heeling angles tighten the sphincter. Richard Woods has been designing hard chined multis for a very long time.