jimi
Well-Known Member
Ie why do some boats have a raked stem, surely to maximise waterline length all shoul be vertical?
Why do boats have pointy bits at the front?
- Thread starter jimi
- Start date
Cutter
Well-Known Member
so you know which way its going?
ChrisE
Well-Known Member
all the better to ram you with, my dear...
Evadne
Well-Known Member
Well, when we lost reverse gear, approaching a pontoon at Lymington, the spoon bows struck the wood and three and a half tons slid gracefully up and out of the water, before dropping back with alarming rapidity. Scratched the paintwork, dented the pride and almost soiled the trousers, but no real damage to boat or pontoon. With a vertically stemmed boat it would have been the irresistable force and the unmoveable object.
Alternatively, its not that the waterline is shorter but the LOA that is longer, and I have more deck space than a straight stemmed boat of 20' LWL.
Alternatively, its not that the waterline is shorter but the LOA that is longer, and I have more deck space than a straight stemmed boat of 20' LWL.
jimi
Well-Known Member
So all the crap drivers buy spoon bowed boats .. makes sense .. I've seen TK driving as well!
dralex
Well-Known Member
Mmm- done that myself- had reverse gear, but acccidentally knocked the control into forwards as I left the boat to get a line on, leaving the boat to gracefully mount the pontoon.
Did you want a serious answer here Jimi?
Did you want a serious answer here Jimi?
Evadne
Well-Known Member
Oi
For once it was nothing to do with my otherwise faultless boat control, you just try slowing the boat down when the selector decides to stick in forward gear. Its a good job I don't use the "hurtle in at full tilt and fire retro rockets" technique I've observed in some Solent marinas.
For once it was nothing to do with my otherwise faultless boat control, you just try slowing the boat down when the selector decides to stick in forward gear. Its a good job I don't use the "hurtle in at full tilt and fire retro rockets" technique I've observed in some Solent marinas.
graham
Well-Known Member
i think the old theory was that the waterline length increased as you heeled and in light airs the wetted area friction was less .Same applied to long counter sterns,very pretty but not very practical.
DJE
Well-Known Member
Interesting. Look who else uses them.
benjenbav
Well-Known Member
Re: Oi
This is, of course, the same berthing tactic used by Chief Bromden at the end of the fishing trip in One Flew Over the Cuckoo's Nest, but often deployed with less success. One can only reflect on the relative sanity of its proponents.
This is, of course, the same berthing tactic used by Chief Bromden at the end of the fishing trip in One Flew Over the Cuckoo's Nest, but often deployed with less success. One can only reflect on the relative sanity of its proponents.
Bejasus
Well-Known Member
I guess the ancients had other ideas.
Twister_Ken
Well-Known Member
It's so Jimi knows which way they're spozed to go.
Peppermint
Well-Known Member
Re: Oh dear
I seem to have been going the wrong way all these years. Why on earth would you have the driver at the back?
I seem to have been going the wrong way all these years. Why on earth would you have the driver at the back?
Oldhand
Well-Known Member
As the bow plunges into a trough, a raked stem will increase buoyancy more rapidly than a straight stem and is thus less likely to dig the bow into the next wave. Vertical stems are best suited to long slim bow sections which will cut through waves, which usaully results in a wet boat.
oldharry
Well-Known Member
.... to make it easier to crunch PWCs?
oldharry
Well-Known Member
Re: Industrial espionage...
[ QUOTE ]
I guess the ancients had other ideas.
[/ QUOTE ]
... oooh! Isnt that Beneteaus latest secret plan you just pinched!!!
[ QUOTE ]
I guess the ancients had other ideas.
[/ QUOTE ]
... oooh! Isnt that Beneteaus latest secret plan you just pinched!!!
stormeagle
Member
In a word (or two) reserve buoyancy. Perp bows tend to hobby horse. raked bow (and stern) gives a gentler motion. Also yots tend to sai heeled, which increases the waterline length.
Ships_Cat
Well-Known Member
Most modern cruising and race yacht stems are vertical - well they are in those parts of the world that know how to design good boats eg http://www.elliott-marine.com/index2.php and plenty of others.
Only problem with them that I know of is stopping the anchor (and chain) chipping the paint off the stem so need a sprit for it if cruising. A friend has just done Cape Horn West-East, then again East-West and sailed a goodly proportion of the Southern Ocean in a vertical stemmed modern fast cruising yacht so it is difficult to say that they are no good in seas.
Of course, the MOB crowd will claim otherwise /forums/images/graemlins/smile.gif even though there have been plenty of old style boats that are vertical stemmed or close to it eg Lyall Hess designs, various traditional boats (for the record our own stem is not vertical, but it sure would be we ever built again).
John
Only problem with them that I know of is stopping the anchor (and chain) chipping the paint off the stem so need a sprit for it if cruising. A friend has just done Cape Horn West-East, then again East-West and sailed a goodly proportion of the Southern Ocean in a vertical stemmed modern fast cruising yacht so it is difficult to say that they are no good in seas.
Of course, the MOB crowd will claim otherwise /forums/images/graemlins/smile.gif even though there have been plenty of old style boats that are vertical stemmed or close to it eg Lyall Hess designs, various traditional boats (for the record our own stem is not vertical, but it sure would be we ever built again).
John
BrendanS
Well-Known Member
[ QUOTE ]
but it sure would be we ever built again
[/ QUOTE ]
Why?
but it sure would be we ever built again
[/ QUOTE ]
Why?
ytd
Well-Known Member
I think it's mainly fashion - resulting from a rating rule. Wasn't the 'graceful' bow and stern overhangs of the J boats encouraged by their rule. 18' dinghies have always had a rule which restricted LOA to 18' but little else. So you always had vertical stems and sterns. Cruising boats are often old racing boats so what's (oftern wrongly) considered a good cruising boat is a racing boat from 30 years ago.
