Reply
 
Thread Tools Search this Thread
 
Old 26 July 2004, 14:33   #51
Member
 
Country: UK - Wales
Town: Southampton
Boat name: DynaMoHumm/ SRV/deja
Make: Avon8.4, 5.4 & 4.777
Length: 8m +
Engine: Cat3126 Yam 90 &70
MMSI: 42
Join Date: Dec 2003
Posts: 6,556
Tim why don't you become a trade member?
__________________

__________________
Here it comes again, I don't stand a chance
Soul possession, Got me in a trance
Pullin' me back to you - Deja Voodoo
Rogue Wave is offline   Reply With Quote
Old 26 July 2004, 14:38   #52
Trade member
 
tim griffin's Avatar
 
Country: UK - England
Town: Newport IoW
Boat name: Amean/Pronto/Rumbo
Make: Solent Rib Princess
Length: 7m +
Engine: 200hp Etec 260x 2
MMSI: lots of them
Join Date: Sep 2003
Posts: 1,859
can't afford it im one of those skint instructors
regard tim
www.griffmarineservices.co.uk
__________________
Tim Griffin
RYA Freelance YMI power Powerboat and PWC instructor trainer vhf first aid sea survival Diesel engine radar and navigation instructor
tim griffin is offline   Reply With Quote
Old 26 July 2004, 15:13   #53
Member
 
Country: UK - England
Town: Cowes
Boat name: Tabby Cat
Make: Halmatic
Length: 7m +
Engine: 2 x Yamaha 115
Join Date: Jun 2004
Posts: 388
Thanks for that tim. Good to see you on board supporting the RYA flag. As we know the RYA are endeavoring to rid of the crappy schools.
__________________
Simon Hawkins is offline   Reply With Quote
Old 26 July 2004, 15:22   #54
Trade member
 
tim griffin's Avatar
 
Country: UK - England
Town: Newport IoW
Boat name: Amean/Pronto/Rumbo
Make: Solent Rib Princess
Length: 7m +
Engine: 200hp Etec 260x 2
MMSI: lots of them
Join Date: Sep 2003
Posts: 1,859
regards Tim
www.griffmarineservices.co.uk
__________________
Tim Griffin
RYA Freelance YMI power Powerboat and PWC instructor trainer vhf first aid sea survival Diesel engine radar and navigation instructor
tim griffin is offline   Reply With Quote
Old 26 July 2004, 15:26   #55
Member
 
Country: UK - England
Town: Cowes
Boat name: Tabby Cat
Make: Halmatic
Length: 7m +
Engine: 2 x Yamaha 115
Join Date: Jun 2004
Posts: 388
Tim.Cant believed you asked me that question. Blue yellow rib etc.
__________________
Simon Hawkins is offline   Reply With Quote
Old 26 July 2004, 15:28   #56
Trade member
 
tim griffin's Avatar
 
Country: UK - England
Town: Newport IoW
Boat name: Amean/Pronto/Rumbo
Make: Solent Rib Princess
Length: 7m +
Engine: 200hp Etec 260x 2
MMSI: lots of them
Join Date: Sep 2003
Posts: 1,859
yes i know i just twigged my self never very good at remembering surnames am laughing at myself now sorry mate
regards tim
www.griffmarineservices.co.uk
__________________
Tim Griffin
RYA Freelance YMI power Powerboat and PWC instructor trainer vhf first aid sea survival Diesel engine radar and navigation instructor
tim griffin is offline   Reply With Quote
Old 26 July 2004, 16:04   #57
Member
 
Pete7's Avatar
 
Country: UK - England
Town: Gosport
Boat name: April Lass
Make: Moody 31
Length: 9m +
Join Date: Aug 2001
Posts: 4,850
Quote:
Originally Posted by Simon Hawkins
When going down the wave ease the power off but not too for the wave to come over the back of the boat and possibly make you broach, then at the bottom of the wave put the power on too lift the bow and ride up the back of the nest wave. By doing this you will not drive into the back of the wave and stuff the bow.
No this is wrong. Assuming a sensible combination of outboard power and rib then the power should be applied going down the face of the wave. this is essential to keep the bows up or she surely will stuff into the back of the next wave. The power should be backed off going up the back of the next wave so the bow doesn't fly off the top, but gently cruises over the top.

In practicse this will mean just gently dipping the throttle as you go over the top of the wave and then back on with the power to keep the bow up as you run down the face of the wave.

You won't get all the waves right and occasionally you go over the top to find a big hole but keep the power on. This is hard work and should not be understimated how tiring it can be so do change drivers if its an option.

The reason breaking waves are dangerous are they contain lots of air not water so won't support a boat! or allow the prop to drive properly and you end up at the mercy of the wave and risk being over taken or broached, something quite dangerous.

Pete
__________________
Pete7 is offline   Reply With Quote
Old 26 July 2004, 16:14   #58
Member
 
Country: UK - England
Town: Cowes
Boat name: Tabby Cat
Make: Halmatic
Length: 7m +
Engine: 2 x Yamaha 115
Join Date: Jun 2004
Posts: 388
Pete.That is my theory but better said by you. Obviously you do not want to drop off the top of the next wave, the reason for putting power on up the next wave is to lift the bow wave then easing the throttle once reaching the crest. You will have to keep the boat travelling faster than the wave behind you to prevent the boat from broaching. As said by you and me in breaking waters their is too much turbulance and the propellor will not grip landing you in a whole load of problems
__________________
Simon Hawkins is offline   Reply With Quote
Old 26 July 2004, 16:26   #59
Member
 
Pete7's Avatar
 
Country: UK - England
Town: Gosport
Boat name: April Lass
Make: Moody 31
Length: 9m +
Join Date: Aug 2001
Posts: 4,850
Simon, you should be able to travel faster than most waves around the UK, in a rib, but the problem is you have to loose speed going up the back of the wave or you will come flying off the top and land with a big crash. so power off going up so you gently cruise over the top in control. Going down you must get the bow up so trim out and power on. Dropping the power going down the face of a wave will cause the bow to drop and in to the back of the next wave you go.

Pete

Perceived Sea State and Freak Waves.

.
__________________
Pete7 is offline   Reply With Quote
Old 26 July 2004, 16:42   #60
Member
 
Country: UK - England
Town: Cowes
Boat name: Tabby Cat
Make: Halmatic
Length: 7m +
Engine: 2 x Yamaha 115
Join Date: Jun 2004
Posts: 388
Pete agreed. However too mcuh speed will drive you staright into the back of the next wave thus putting the bow under the water. Power down the wave a little faster than the following wave then sit on the back of the next and gently ease over the crest then power on again but not too much. I think we are both getting at the same thing.
__________________

__________________
Simon Hawkins is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 01:30.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.