15 M SWATH SHARK by Sea Technology AS

The SWATH hull by Sea Technology AS is designed to be highly efficient and comfortable under rough and challenging sea conditions.

CONCEPT:
Length: 15 M
Beam: 8 M

Benefits:
Greater stability and greater seakeeping ability compared to typical single hull or catamaran hull / Reduced motion sickness / Safety / Comfort / Efficiency under rough sea conditions / Loading capability

Testing conducted Stadt Towing Tank AS.

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[shirleymae]

I am a former commercial fisherman/lobsterman, ( with some rather advanced vessel designs of my own). I just wanted to say that you have a great looking vessel design there, but if you wanted, there are still some further advanced design aspects that you could incorporate in with your design that would really put every other multi-hull vessel design in your dust. Using some design aspects taken from a variety of other SES types of vessels such as ... a wider bold flying wing shape, (to harness the WIG effect), inverted -v bow entry. 4 stabilizing lifting foils (which could also be connected to a ride control system), a CAB - captured air design aspects, (flat bottomed sponsons with small air cavity. This would not be a hovercraft, but would include an active, and passive air induction system, and low volume, stepped air spaces, (providing an air lubrication under the hulls).
With some of these advancements incorporated into you original hull shape, i wouldn't be surprised if you actually doubled you current speeds, which would also significantly improve fuel efficiency, and range.

[aldocosta]

Esses flutuadores deu uma estabilidade excelente a embarcação. Ele simplesmente deslizou suavemente igual um veleiro Viking

[timlewis]

I look forward to seeing real test environments, swell and seas from different angles, windage effect on steering etc

[grideffect]

Looks like smooth sailing. The bridge view gives a better feel for how it should perform.
Taking in the boat scale relative to the waves. It looks really stable...

[lavaljeantet]

Strictly speaking, it's rather what is called a Semi-SWATH or Swathed- classical catamaran. The SWATH is when tou have fully-submerged torpedoes under sharp fins instead of hulls.

[freddion]

my my, I remember MY SPIRIT yacht. i miss that boat. A wave-piercing yacht.

[___Chris___]

Beautiful SWATH design, although - for a boat with a rather low beam/length ratio for a "catamaran", especially one that's sitting rather high in the water - I wonder about vertical COG, righting moment and as a result: capsize safety. Would it be self-righting in a "turtled" state?
Also: is there only forward visibility?

[wictimovgovonca]

I really liked the side by side comparisons to the conventional monohull. I'm wondering how this kind of hull but with a narrower beam would behave. I'm looking for something suitable for both coastal as well as canal travel, so limit on beam would be 5 or possibly 6 meters. I figure about 15 ton. I didn't see what your draft is, but that would be a concern for me.

[tsmaritimesdnbhd]

good sharing. where the location towing tank test? thanks

[maritimehawaii]

I drove the very first swath boats to be certified by the USCG in United States Navatek-I and Navatek II and Sea Slice. Small Waterplane Area Twin Hull. They definitely need stabilizers you can have all four or just two. On following seas, there little uncontrollable as far as roll rather then pitch. We had active ballast tanks where water was moved due to shifting of weight, passengers that is. Great designs tho, but would definitely change the leading edge of the bow. Thankyou

[bryanrussell]

It looks like a minivan sitting on pontoons. But I still want one.

[ChrisBGramzizpups]

planning a boat build for travel. this is close to what i drew up. except I think id like the, wings/pontoons out to the side a bit for better stability, and round the top of the boat some, so if turned over it will right its self.

[ryanoros]

SWATH hull's always preform well the two to one ratio make's them hard to find dockage for them in marina's.

[jandersen]

The struts should be hydraulic, so they can compensate for all the motion. That way the could eliminate seasickness!

[wictimovgovonca]

It is hard to tell from your model how wide the amas (or torpedo tubes or whatever you call them) are. Is there enough room for a diesel and clearance to work on it, or would that be up high with a shaft or generator to drive electric motors?

[OttoMatieque]

nice concept and good performance
call it the 'turtle' instead of 'shark'

[ElGoogKO]

Hello, this is an interesting vessel.
I have a curiosity as a passionate mind, if some of your naval architects would enjoy using their spare time to think about it.
If they were to time travel back 100 years, could they implement such a multi hull design to create battleships, battlecruiser or any capital warship.
We are talking of vessels of 30-50.000t and over, with armour plates and sailing the oceans.
It would be a fun video engaging in such fantasy theories on your social media following.
What about an aircraft carrier of those times?
Having access to steel works from 1 century ago, without modern carbon fibre, titanium and other fancy materials, but using the knowledge of today they posses in this field.
Thank you, and congrats on the modern vessel you made

[delmarrey]

I always wanted a submarine. This is halfway there. Looks like the bottom paint bill is going to be pretty high, unless it’s dry docked often.

[jimj]

Imagine combining this with the active suspension from Servo Yachts. Would completely eliminate seasickness.

[PhillipCadiente]

how much weight can you put on a vessel at 32ft application of this design