CMN Ocean Eagle 43 Trimaran Patrol Vessel Sea Trial in Sea State 5
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- Опубліковано 28 вер 2024
- French shipyard CMN has just released a video showing its Ocean Eagle trimaran patrol vessel during sea trials in extreme weather conditions (Sea State 5). Thanks to its design, the Ocean Eagle 43 demonstrates exceptional stability.
Read: www.navyrecogni...
A collaboration with Nigel Irens, naval architect well known for his sail trimaran racers, on a concept dating from the end of the 1980ties Ilan Voyager, a 20 meters trimaran, able of 28 knots with only 240 HP. Ilan Voyager and successors have proved to have an outstanding seaworthiness.
The CNM 43 sails 238 NM at 15 knots with only 1 metric ton of fuel, so it is particularly economical at patrol routine speeds. To those used to imperial style units that gives about 0.83 mile per gallon, a very good result for a 143 feet vessel. Monohull patrol boats for similar work and performance have a consumption 4 to 5 times more at 15 knots.
A thing of beauty!
I love the boat and music.. the boat looks beautiful
fantastic!!
It looks a lot like the "Brigitte Bardot" form the fleet of Sea Shepherd Conservation Society
Both vessels were designed by Nigel Irens, who also designed the similar ILAN Voyager.
i love how the bow just disapears in the water and that it can
Sub-marine.
This craft is similar to the Cable and Wireless that circumnavigated the earth and then it was renamed Brigitte Bardot, but I do not know any more than that.
Both pitch and roll control are fine, but I am not sure that pitch control could be controlled by a foil, which could be useful it it is not.
They were both designed by Nigel Irens.
Imagine trimarans like this with solar panels as range extenders to save fuel...
+Wouter Debois make it all electric
Probly wouldn't be fast enough. I would have made it a SWATH hull with a helo pad on the stern and another one on the top deck. Design the sponsons big enough to house big diesels with water jets for propulsion.
The same ship only 50% bigger would b a good size for patrol+. As it is a larger hover craft or rough sea coast guard boat is still better. It is just too small for mission. The other way to go is to add 2nd body & move the pontoon outside making it a quad hull. This keeps the sleek fast shape but w/2 ridged boats 2 decks & 2 main drives. 1 cabin is for all the controls & the other for living space. The decks would triple n size w/the connection. I would make the connection pnts flex.This means that u hve 2 dual hull boats if damage by storm or enemy fire. The drag & handling should b better combined then w/ 1 main hull.
Or, in the case of Bonhomme Richard, damaged by an upset female crew.
In that situation, 'damaged' refers to the complete loss of a four billion ('us$4B') ship from the sabotage of one female 'crew-person'.
@@largemarge1603 where did you hear that bs from Fox News? The cause of the Bonhomme Richard fire and resulting damage was due to improper storage of flammable materials, inadequate ships company training to contain the fires and the fact that much of the ships fixed fire fighting equipment and systems were disabled while it was in for repairs. The improper training fell on the senior officers and enlisted men with The Captain, XO, chief engineer and command chief petty officer all reprimanded for not following Naval training guidelines laid out several years before after a similar fire damaged a submarine. There was a male sailor charged with arson who was completely exonerated at his trial with the cause determined to be sloppy storage with flammables and other combustible materials in close proximity to each other which caused the fire and slow response to contain the fire due to improper training and inadequate or inoperable equipment which allowed it to get out of control.
it has roll stability but it doesnt seem to have pitch stability.
Quite the contrary ; it has exceptional pitch stability, due to the wave-piercing design, even greater than its very high roll stability. (See video caption : roll +/_ 6d , pitch +/_ 2d.) Compare to any more conventional ship, and you'll see the difference.
PJCarobel thanks but my comment came from my observations from the video. the craft seems to ride high in the water from being very light and thus i dont think there is enough down force for the wave piercing hull to cut through.
+amancalledfroggy I do find that he sails very well with soft movements in such a short wavelength state 5 sea with rather abrupt waves (the trial was made at La Hague in the Channel close to the coast) at almost full speed.
A similar sized monohull would be jumping like a mad goat at 28 knots, and speed would be have to be reduced greatly to spare the poor crew.
The close zig zags shows a very nicely damped small rolling, and it is a maneuver you would not be tempted to make at 28 knots on a monohull, unless you want to empty the toilet seats, and the closets.
+Ilan , Well ..why don't the toilet seats seal tight when shut...! And the closets have locks ..and the crew can strap themselves into a chair like the fighter pilots. : )
Toilets probably flush with air like a vacuum.
thats way more than 43 feet
its 43 meters
bts
Guauuu q belleza ,son hermosos ,nada parecido no?
very good stability in the waves
All multihulls have better stability than other hulls but especially the trimaran which is the evolution of the first single outrigger design.
Nice boat!
Solar panels? Have fun going 3 knots...
Would it be possible to scale this down to 60ft? Add a fishing cockpit and a tower?
With less length comes less efficiency.
Less cargo capacity.
Less fuel, less range.
At some point, the smaller beam decreases stability.
Trade-off.
Ok, it's a boat....
I owned a trimaran once and I would LOVE to have that boat but I guaranTEE it would have more than 240hp!
u r already out n it, so hving redundancy of 2 rigid boats & 2 helos insures r can rescue them & still bail out if things good really bad. Time is critical for rescue & 2 helos does it twice as fast. 1 on station & 1 coming or going, or 2 looking separately & returning for fuel. U can run the engines slower but still hve a higher return n speed because twice the props. Most important 2 main hulls means double the fuel. As is it is what a 2-4 day ship, but w/double hulls it could stay out a week, allowing it to preposition 70 miles out waiting on the storm. This would let the small versions ships handle 25miles from shore. Hving 4 or 5 of these 75 to 100 miles apart backed by helos would make for a budget friendly search & rescue team.
@James,
Are you volunteering to sit in a storm off-shore, hoping somebody wrecks so you have purpose?
With a few dozen of these, the French could keep a solid eye on all the Western Med year around as well as the Bay of Biscay.
Too fragile construction with too much stress on the forward part of the hull. Not very seaworthy, unsafe and can break up. How anyone can invest money in this submarine project is beyond me. Thanks.