Does you boat’s bow slam a lot when heading towards waves? Mine (Beneteau 361) does quite a lot if I do, though I try to avoid it of course by altering course or slowing down. I understand that bow and boat shape can result in more or less slamming but some people claim that their boat nearly do not slam at all. And I find this strange. Could it be the size of the boat? What about your boat?
Bow slamming
- Thread starter Philip_Oceanis 361
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its the designers fault, the cherubini hunter hulls dont slap/slam/pound much, but they have rounder bottoms and finer bow sections and carry the beam further in the middle of the boat instead of the newer hunter benetau and catalinas that opt for wide transoms and flatter bottoms to make faster speeds under spinnaker, everyone is designing boats with one design fever in mind, look around the dock at boats that are older and "slower" like the cherubini hunters and the pacific seacrafts they will have finer hulls, the sides will enter the water at nearly 90 degrees where the newer boats show their curve towards the flat bottom before the hull enters the water on the sides.
Newer boats
rufus is dead on. It is all in the design of the boat. I have a friend with a Cherubini H33, and another one with a nearly new H36. I have sailed the gulf in both. The Cherubini never slams or pounds, and the newer 36 slams in not very rough seas. I have an old Siedelman 37, and if it is pounding, you are too busy to notice.
rufus is dead on. It is all in the design of the boat. I have a friend with a Cherubini H33, and another one with a nearly new H36. I have sailed the gulf in both. The Cherubini never slams or pounds, and the newer 36 slams in not very rough seas. I have an old Siedelman 37, and if it is pounding, you are too busy to notice.
Yes It Does
I think a lot of the newer designs have a pretty flat forefoot which, even with a fine entry, will pound in a short steep chop. When mine does that, usually under power, I head off to reduce it.
I think the guys here did a fine job of "nailing" the reasons in hull design & pounding.
I also like what Rick added on heading off-wave. I've noticed over the years sailing a lot of different boats, that when heading into bow waves, dead-on is not the most comfortable ride let alone loss of speed.
I have also noticed based on hull design, different boats have slightly different angles off-wave for that "sweet spot" for comfort & speed. Start out about 30° off & go from there to find your best-off angle of approach. Wave height, interval & wind conditions can also determine you bow-off angle.
CR
I also like what Rick added on heading off-wave. I've noticed over the years sailing a lot of different boats, that when heading into bow waves, dead-on is not the most comfortable ride let alone loss of speed.
I have also noticed based on hull design, different boats have slightly different angles off-wave for that "sweet spot" for comfort & speed. Start out about 30° off & go from there to find your best-off angle of approach. Wave height, interval & wind conditions can also determine you bow-off angle.
CR
not trying to pick on anyone just commenting on the current state of the boat market (like alot of things the customers are allowing themselves to be told what to buy instead of buying what they want) but what a bass-ackwards way to get a proper ride in a seaway instead of finding a boat that was engineered properly from the beginning, we expect a j-111 to slam and pound cuz its a race boat. idk it just sounds alot like the motocross industry, manufacturers telling customers that 4-strokes are better and more fun (truth is they make the manufacturer more money cuz they break harder and eat more parts) whatever.What a wonderful reason to add a modern 45 lb spade anchor, and 150' of 3/8" all-chain rode to the bow! You'll sleep better too.
Boat manufacturers don't know what kind of sailor you are. For all they know you may be a dock rat who never overnights, especially in a blow and have no taste for $1,500 worth of ground tackle. For you, a $100 danforth and 100 ft of nylon triple braid may be just the ticket to make the sale. On the other hand, I met a euro dude who transited an old 2cycle CZ motorcycle in his anchor locker. So there's an idea for you.
So there's an idea for you.
Sorry guys,
But I don't get what the last 4 posts had anything to offer
I thought we are all here to help one another......DUH!
Stay on course ,
if your not part of the solution............
CR
But I don't get what the last 4 posts had anything to offer
I thought we are all here to help one another......DUH!
Stay on course ,
if your not part of the solution............
CR
As the owner of a similar underbody / rig Bene I can help there CaptRon. It helps to put some design weigh in the bow. It also helps to keep the boat powered up with balanced sail plan. Keep some power forward and drive the bow in. Shorten the main proportionally.
Not sure if the 361 has a bow fresh water tank??
Mine does and holds 50 Gallons in the bow. That's about 500lbs.
If I don't fill it, the hull slams hard. If it's filled it won't slam as hard.
Something to try if you have the same configuration.
Similar to what Gunni said.
Good Luck
Mine does and holds 50 Gallons in the bow. That's about 500lbs.
If I don't fill it, the hull slams hard. If it's filled it won't slam as hard.
Something to try if you have the same configuration.
Similar to what Gunni said.
Good Luck
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