Volvo reverse bow: coming to a boat near you?
- Thread starter Jackdaw
- Start date
Isn't the Gunboat the one whose bows, on delivery with a Sail magazine guy on board, pierced a wave adroitly and the wave promptly smacked the cabin on the bridgedeck? It broke the front of the cabin to the point where they had to abandon the boat.
Any wave hitting that is bad & big enough can & will smack the cabin, deck, cockpit & crew.
You're never more alive until you're close to death so, sit back n-just enjoy the ride...........What we do, 99.98% of the world's population will never have the opportunity or freedom we enjoy.
CR
You're never more alive until you're close to death so, sit back n-just enjoy the ride...........What we do, 99.98% of the world's population will never have the opportunity or freedom we enjoy.
CR
Thats why boats unfortunate enough to have BIG 'windows' also need 'storm shutters' .... ditto with BIG hatches, and BIG companion ways, etc., too. ;-)
No, the Aeroyacht Alpha42. It was hit by an estimated 50' rogue wave in January off Bermuda, skidded backwards, bending rudders and losing steerage. Back-siphoning bilge pump designs made it impossible for the boat to stay afloat after the crew was removed.
Here is a photo of DDG 1000 getting fitted out in Bath, Maine.
I think the idea is that the bow cuts through the waves rather than riding over them, making for a smoother but wetter ride. I am not convinced, if it was that good an idea, all boats would have this bow.
You would need a really big bowsprit to safely handle the anchor.
I think the idea is that the bow cuts through the waves rather than riding over them, making for a smoother but wetter ride. I am not convinced, if it was that good an idea, all boats would have this bow.
You would need a really big bowsprit to safely handle the anchor.
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I know little of boat design, but I know the difference between a displacement hull and a planing hull. So, increasing water line length to increase hull speed seems unlikely.... because these boats are designed to sail well above the "theoretical hull speed" formula.
I've checked a few sites that feature boats with this bow shape and they all refer to it as "wave piercing" For instance, here is an except from the Nacra 20 catamaran profile.
I've checked a few sites that feature boats with this bow shape and they all refer to it as "wave piercing" For instance, here is an except from the Nacra 20 catamaran profile.
well it is on a raceboat. No way did style or focus groups have anything to do with it. It may be a "distortion" as a consequence of the rule. How do they measure waterline length? Might get "free" LWL
even though the tp52 hi performance shape is one of the hottest, and successful trends in yachting design lately, I still would prefer the more graceful and functional bow overhangs used on the older swans and other great cruising and racing yachts. I find their allot easier to set anchor and prevent water from coming over the bow in rough seas. did you ever see a dry cockpit on a Volvo 70? besides one of my worst fears is running over a 90% submerged dock pylon out in the open ocean which is common after nearby storms rip up coastal piers. I believe a good overhang bow will survive with less damage than a plumb bow, that will not ride up and over a partially submerged object. the slanted finn keels should also fare better than the new vertically straight down bulb keels during similar impacts, and will collect allot less grass, and lobster pots on the way.
I think J40's had a retractable Shotgun for the light air sails?? I cant remember I have CRS..................I'am thinking of putting one on my Oday 27?? A 24'' with no stays a single pully or a pad eye on the end for roller furling code o. I will post photos.........Have Fun-Brad
How can it possibly increase waterline length????... the waterline is measured at the.... are you ready?...... the WATERLINE. The angle of the bow doesn't change the waterline length unless the boat is heeled over... and more surface is wetted. All of these boats, mono and multihulls are designed to be sailed as flat as possible and actually lift up on top of the water at speed... AKA "plane".....
What they are trying to do is provide as stable ride as possible. as another poster mentioned. which will give the boat more stability over choppy waters so it can stay on plane.
What they are trying to do is provide as stable ride as possible. as another poster mentioned. which will give the boat more stability over choppy waters so it can stay on plane.
Hmmm, a danforth hanging out over the extension pole would either add or distract from the architect's line -- I think an anchor would definitely be a distraction. Also, while not a big deal at all, I'd rather use those extra few feet of rode to increase scope rather then protrude over that supporting extension. I say, form should follow function.
I'm one who thinks that there is no such thing as a bad boat or a good one beautiful or ugly.
Most people own the best boat in the world in their view because the compromises on that vessel suit their needs.
This sucker looks like a submarine but as many mentioned, probably slices through waves like a needle- underneath.
Rick Niles
http://gscharters.com/
Most people own the best boat in the world in their view because the compromises on that vessel suit their needs.
This sucker looks like a submarine but as many mentioned, probably slices through waves like a needle- underneath.
Rick Niles
http://gscharters.com/
I know the designer of my boat has made the claim that it is difficult to achieve a correct hull shape with a plumb bow. By the nature of how my boat acts as it approaches hull speed, is that it is already planing before hull speed is reached. Kind of like the old skows. I've got videos of the nose of my boat running down wind at about 5 knots. The front of the boat is just barely out of the water, depending on the wave action. The waterline is irrelevant.
My guess is its purpose is to make the deck more narrow in front, so that the waves do no bury the front of the boat. These boats have no freeboard for the size waves they run in, so there is a lot of water landing on the deck. All this adds weight to the front of the boat. The less deck area up front means less water on the deck and less total weight on the boat. In contrast, most consumer boats have greater freeboard, and do not typically operate in ocean waves. I see no practical purpose for a consumer boat to use this design. Sure, it will be a style selling point, but in real practice seams to have no value.
My guess is its purpose is to make the deck more narrow in front, so that the waves do no bury the front of the boat. These boats have no freeboard for the size waves they run in, so there is a lot of water landing on the deck. All this adds weight to the front of the boat. The less deck area up front means less water on the deck and less total weight on the boat. In contrast, most consumer boats have greater freeboard, and do not typically operate in ocean waves. I see no practical purpose for a consumer boat to use this design. Sure, it will be a style selling point, but in real practice seams to have no value.
Oh my god!
Well I don't care what is does for the boat, It sure in heck doesn't do anything for me!!!!!!
Not being attracted to a plumb bow, I actually like the aggressive look of the reverse bow for a racing boat. I can almost see this taking the place of a plumb bow on boats that appeal mostly to racers. So, yes, we will start to see this on production boats. But, I think it will start to replace the boats with plumb bow before it starts to replace the boats which carry a more traditional bow.
For myself, I'm repelled by the aesthetics of a plumb bow, and in my old age, aesthetics takes significant precedence. I'd buy a boat for the looks, the utility while sailing for pleasure and cruising, and comfort before considering a racer/cruiser that is primarily racer oriented. I would be in the market for a boat with a traditional bow.
But if I were in the market for a racing oriented boat (that is to say, if I had unlimited funds), the appeal of the reverse bow may win out over a boat with a plumb bow, given that it would be more likely to have all the dedicated race features which would make a race boat exciting to own. A boat with a plumb bow might then be viewed somewhat as a compromise. Compromises are often relegated to the trash heap when they fail to serve either purpose very well.
For myself, I'm repelled by the aesthetics of a plumb bow, and in my old age, aesthetics takes significant precedence. I'd buy a boat for the looks, the utility while sailing for pleasure and cruising, and comfort before considering a racer/cruiser that is primarily racer oriented. I would be in the market for a boat with a traditional bow.
But if I were in the market for a racing oriented boat (that is to say, if I had unlimited funds), the appeal of the reverse bow may win out over a boat with a plumb bow, given that it would be more likely to have all the dedicated race features which would make a race boat exciting to own. A boat with a plumb bow might then be viewed somewhat as a compromise. Compromises are often relegated to the trash heap when they fail to serve either purpose very well.
Why give away interior and deck space. Just makes it harder to install a properly positioned anchor roller. To some it might look cool but I just look for practicality.
Yes, I agree
The traditional bow will survive for your reasons stated.
That's why the reverse bow will begin to replace the plumb bow. It will be a progression to one-design racing, which most racing-oriented boat owners tend to prefer anyway, I think. It will be seen as a break-away from the design shackles of ORR and IRC. They have little regard for anchoring and sun-tanning. The bowman will have to cope with smaller deck area as the sacrifice for speed.
The traditional bow will survive for your reasons stated.