in severe conditions, trying to head deep downwind we would SHEET IN when hit by a gust or get punched by a wave... that way effectively reducing the sail area to the wind.
The problem is not a failure to quickly release the main because at those speeds, the apparent wind angle is already way aft, so you'd just be projecting more sail are to the pitching moment. The problem is once the bow gets stuffed into the wave and the rudders are out of the water, you have no control.
@kadypk The Extreme 40s seem to have this problem most of the time . In the videos they just seem to get their bows stuck in the water and then as like as not they're over .
Exactly. my understanding is that the E40's bows are not true wave piercing shapes, so once they get stuffed, they show a lot of hydrodynamic resistance so the pressure on the sails is likely to just keep on pushing them ass over teakettle.
Actually, sorry, the apparent wind angle actually moves forward as you are going faster, but I'm still pretty sure that doing the quick release on the main still winds up just contributing additional pitching moment.
@kadypk So the answer is to look at each wave as it approaches ,then bear away so the wave buries the windward hull perhaps ?then straighten up Carry on ....What do you do to remain upright ?
I'm not an experienced multihull helmsman (I've only ever been a captain on a cruising cat in Belize for a charter), so I don't know what the correct technique for high performance multihulls, but I suspect that you want to avoid burying the bows as much as possible, especially if they are not wave piercers.
@kadypk I agree 100% with you kadypk, but you also need to remember that at certain type of sea conditions, the wave piercer must have more volume, as example you can see the first version of the BMW oracle trimaran
@tincoffin rule number one is not to go deaddown wind. your appreant wind shifts forward as you move fast. when you slow down, the main sail catchs the wind from dead behind and the top of the sail pushes bow down. Add that to waves, you have no control. the curved daggerboards help lift bows out of water, but you need to be at 12+knots for them to help.
I highly doubt the boat was a total loss. The captains ego maybe but I think the boat should be fine. What a ride that must have been! That thing is over 100 feet long right?
I can't imagine pitch poling that sucker:)!!!
Can someone say if they did lose gear or damaged the boat?
@auzzielaz my only experience is with much smaller catamarans, but when every time ive overturned it happened to fast i didnt have a change to release the boom before i was already tumbling
ils le tractent doucement jusqu'à un endroit ou une grue pourra le retourner. L'ennuie c'est le mat et les voiles sous l'eau...
tomichoudamour 1 year ago
comment font t'ils apres pour ramené et retourné le trimaran.
lajmobile 1 year ago
ce n'est pas le maxi, mais simplement le trimaran orma de 60 pieds...
Le maxi en fait 115
tomichoudamour 1 year ago
Eh! Ben! .."Chapeau" pour cette figure acrobatique du maxi-trimaran de Banque Populaire
Oldjonck 1 year ago
in severe conditions, trying to head deep downwind we would SHEET IN when hit by a gust or get punched by a wave... that way effectively reducing the sail area to the wind.
CactusJackSlade 1 year ago
c'est des choses qui arrivent pas de mal pour la personnes c'est le principal
stoplataupe 1 year ago
Think you might find the apparent wind is actually way forward on these fast boats...
spacecowboy3109 2 years ago
The problem is not a failure to quickly release the main because at those speeds, the apparent wind angle is already way aft, so you'd just be projecting more sail are to the pitching moment. The problem is once the bow gets stuffed into the wave and the rudders are out of the water, you have no control.
kadypk 2 years ago
@kadypk The Extreme 40s seem to have this problem most of the time . In the videos they just seem to get their bows stuck in the water and then as like as not they're over .
tincoffin 2 years ago
Exactly. my understanding is that the E40's bows are not true wave piercing shapes, so once they get stuffed, they show a lot of hydrodynamic resistance so the pressure on the sails is likely to just keep on pushing them ass over teakettle.
kadypk 2 years ago
@kadypk You might like to look at "sailing sport "lesterj It shows what you are talking about !
tincoffin 2 years ago
@kadypk also the X40's bow don't have much buoyancy in them. These ORMAs have big bows.
dlawson688 1 year ago
Actually, sorry, the apparent wind angle actually moves forward as you are going faster, but I'm still pretty sure that doing the quick release on the main still winds up just contributing additional pitching moment.
kadypk 2 years ago
@kadypk So the answer is to look at each wave as it approaches ,then bear away so the wave buries the windward hull perhaps ?then straighten up Carry on ....What do you do to remain upright ?
tincoffin 2 years ago
I'm not an experienced multihull helmsman (I've only ever been a captain on a cruising cat in Belize for a charter), so I don't know what the correct technique for high performance multihulls, but I suspect that you want to avoid burying the bows as much as possible, especially if they are not wave piercers.
kadypk 2 years ago
@kadypk I agree 100% with you kadypk, but you also need to remember that at certain type of sea conditions, the wave piercer must have more volume, as example you can see the first version of the BMW oracle trimaran
dumon13 1 year ago
@tincoffin rule number one is not to go deaddown wind. your appreant wind shifts forward as you move fast. when you slow down, the main sail catchs the wind from dead behind and the top of the sail pushes bow down. Add that to waves, you have no control. the curved daggerboards help lift bows out of water, but you need to be at 12+knots for them to help.
dlawson688 1 year ago
@kadypk Can you put rudders also at the bow on these to aid in control?
mr1000rx 2 months ago
I highly doubt the boat was a total loss. The captains ego maybe but I think the boat should be fine. What a ride that must have been! That thing is over 100 feet long right?
I can't imagine pitch poling that sucker:)!!!
Can someone say if they did lose gear or damaged the boat?
HighDefinitionVideo 2 years ago
Nah it'll probably be an ORMA 40 or 60ft I'd say. 100ft would be bigger than Oracle's America's Cup tri.
sailormuppz 2 years ago 2
Was the boat a total loss?
rayzordee 2 years ago
I wonder why they dont have a `quick release mainsheet system` then maybe they wouldnt have cartwheeled...
auzzielaz 2 years ago
@auzzielaz my only experience is with much smaller catamarans, but when every time ive overturned it happened to fast i didnt have a change to release the boom before i was already tumbling
xekul 2 years ago
@xekul true but in windy weather u should be thinking ahead like car racing .. cheers.....
auzzielaz 2 years ago
@auzzielaz releasing mainsheet would not have helped. They were dead downwind. He need to come up toward wind to keep the boat moving at speed.
dlawson688 1 year ago
oops
0Ojoost14O0 2 years ago
shit man thats srewed
laemoon 2 years ago
omg hit cots billions!!!!
troelatroelatroela 2 years ago
@troelatroelatroela no only a couple million!
dlawson688 1 year ago