Reply
 
Thread Tools Search this Thread
 
Old 27 August 2009, 04:25   #141
Member
 
Country: UK - England
Town: Lymington
Boat name: Farfetched
Make: Solent
Length: 6m +
Engine: Merc. 150 Outboard
MMSI: Lucederterv...?
Join Date: Mar 2005
Posts: 50
Plas Menai -
As a dinghy instructor I understand what experience the helmswoman would have had - plenty of low speed manoeverability and troll speed rib driving, some up to about 10 knots in short bursts but thats really all. PB2, especially if the qualification is done in calm waters is not a rough weather qualification - thats an advanced powerboat qualification skill. I know powerboat instructors as well who I have had to coach in rough weather ribbing.

I don't blame her and commend her for acknowledging her limitations and volunteering as an AI for the exercise and trying to turn back when it got rough. Her turning in rough seas in those waves in an apparently unfamiliar boat are outside her skills and abilities.

Her helming style is fine for low speed dinghy coaching and neither of the senior more experienced instructors corrected her. I strongly feel that the SIiC was to blame for the planning and his failure to spot the limitations of his instructors however I understand how this scenario could go wrong so easily. Him not checking casualties and the welfare of students is a grave error; this is taught as an instructor let alone an advanced powerboat instructor.

Our centre is based in the Medina and we don't run powerboat fun runs in the solent, we don't carry enough inflatible life jackets (150kn) we only have 50kn buoyancy aids.

We are obviously better than Plas Menai
__________________

__________________
Ribomaniatic is offline   Reply With Quote
Old 27 August 2009, 06:16   #142
Member
 
Country: UK - England
Town: Near Godalming
Boat name: AJA
Make: Ribeye
Length: 6m +
Engine: Yamaha F150AETX
Join Date: May 2009
Posts: 558
Quote:
Originally Posted by codprawn View Post

Wind strength doesn't always = wave height. Some of the worst seas I have seen have been with a Force 2 - after a big blow and a strange tide condition.

Is there a way to predict sea conditions to prevent people heading out in awful seas?

I tend to look at the Met Office site, but wonder what others do.
__________________

__________________
neilda is offline   Reply With Quote
Old 27 August 2009, 06:24   #143
RIBnet admin team
 
Poly's Avatar
 
Country: UK - Scotland
Boat name: imposter
Make: FunYak
Length: 3m +
Engine: 2 stroke YAM 20 HP
MMSI: 235089819
Join Date: Sep 2005
Posts: 10,114
Quote:
Originally Posted by neilda View Post
Is there a way to predict sea conditions to prevent people heading out in awful seas?

I tend to look at the Met Office site, but wonder what others do.
It is part of the shipping and inshore waters forecast. It takes the form WIND, SEA STATE, PRECIPITATION, VISIBILITY.

In my ikle boat Sea State needs to be Slight or Calm for me to want to go out. For bigger ribs Moderate is probably OK, Rough is unpleasant and anything worse is for the insane! However even the inshore waters forecast covers a huge area up to 12 NM out to sea - and can't take account of local "shelter" like islands, headlands etc. The longer the fetch (distance travelled by the wind across open sea) the bigger the waves are going to be. The weather in the preceeding days also affects the swell.
__________________
Poly is offline   Reply With Quote
Old 27 August 2009, 06:35   #144
Member
 
Country: UK - Channel Islands
Town: Guernsey
Make: Pending
Length: 8m +
Join Date: Aug 2005
Posts: 296
Unless

you have a lot of experience, if you want to go to the marina and always be able to go out (perhaps yo have mader an appointment with frtiends to do so, etc.), you need to buy something like Codprawn spoke of, or at the very least a semi-displacement or displacement boat. Of course, you will also have to change your thinking; speed reduction for one, and no wave hopping, for another.

"Is there a way to predict sea conditions to prevent people heading out in awful seas?"
__________________
cuttlefish is offline   Reply With Quote
Old 27 August 2009, 06:50   #145
Member
 
Country: UK - Scotland
Town: Ardfern
Boat name: Moon Raker
Make: Humber Destroyer
Length: 5m +
Engine: Honda BF 90 D
MMSI: 235035994
Join Date: May 2006
Posts: 694
Quote:
Originally Posted by Polwart View Post
It is part of the shipping and inshore waters forecast. It takes the form WIND, SEA STATE, PRECIPITATION, VISIBILITY.

In my ikle boat Sea State needs to be Slight or Calm for me to want to go out. For bigger ribs Moderate is probably OK, Rough is unpleasant and anything worse is for the insane! However even the inshore waters forecast covers a huge area up to 12 NM out to sea - and can't take account of local "shelter" like islands, headlands etc. The longer the fetch (distance travelled by the wind across open sea) the bigger the waves are going to be. The weather in the preceeding days also affects the swell.
As well as the inshore waters forecast there's the coastal forecast too, which is for (I think) 2 miles offshore and to a certain extent takes account of the islands and lochs (around here anyway). I interpolate between the two.

The Coastal is split into 6 hour periods. It does tend to give wind strengths of, say 2-7, but that's likely to be true depending on which side of the island you're on, or if you're in or outside of a loch. The more accurate time scale is very useful.
__________________
alystra is offline   Reply With Quote
Old 27 August 2009, 07:15   #146
Member
 
m chappelow's Avatar
 
Country: UK - England
Town: yorkshire
Boat name: little vicky
Make: avon ex RNLI
Length: 3m +
Engine: tohatsu
Join Date: Mar 2008
Posts: 2,310
thing is the uk has such a vairied coast line and in places can go from sheer cliffs to steep pebble beaches/ sheltered bays through to long flat sandyopen beaches with offshore reefs and all perhaps within a 10 /15 miles area and when say an inshore forecast area covers perhaps an 150 mile coast line area a lot is therefore down to local conditions and knowlege ,and experience ,,,though then in some cases as an old retired fisherman /lifeboat cox said to me once ,,the more you think you know about an area the more you realise that you dont in some weather conditions,
,
__________________
m chappelow is offline   Reply With Quote
Old 27 August 2009, 07:29   #147
RIBnet admin team
 
Poly's Avatar
 
Country: UK - Scotland
Boat name: imposter
Make: FunYak
Length: 3m +
Engine: 2 stroke YAM 20 HP
MMSI: 235089819
Join Date: Sep 2005
Posts: 10,114
Quote:
Originally Posted by alystra View Post
As well as the inshore waters forecast there's the coastal forecast too, which is for (I think) 2 miles offshore and to a certain extent takes account of the islands and lochs (around here anyway). I interpolate between the two.

The Coastal is split into 6 hour periods. It does tend to give wind strengths of, say 2-7, but that's likely to be true depending on which side of the island you're on, or if you're in or outside of a loch. The more accurate time scale is very useful.
Thanks Alystra - I hadn't realised that there was actually a difference between the "coverage areas".
__________________
Poly is offline   Reply With Quote
Old 27 August 2009, 07:33   #148
Member
 
Country: UK - Scotland
Town: Ardfern
Boat name: Moon Raker
Make: Humber Destroyer
Length: 5m +
Engine: Honda BF 90 D
MMSI: 235035994
Join Date: May 2006
Posts: 694
Quote:
Originally Posted by polwart View Post
thanks alystra - i hadn't realised that there was actually a difference between the "coverage areas".
__________________
alystra is offline   Reply With Quote
Old 27 August 2009, 08:04   #149
RIBnet supporter
 
jambo's Avatar
 
Country: UK - Scotland
Town: Girvan & Tayvallich
Boat name: Breawatch
Make: Ribcraft
Length: 5m +
Engine: Mercury 150 F/stroke
MMSI: ex directory!!
Join Date: Sep 2008
Posts: 5,787
RIBase
Quote:
Originally Posted by alystra View Post
Ah Tony you old sea dog you!!

Billy
__________________
jambo
'Carpe Diem'
Member of the ebay Blue RIB cover club
Member of SABS ( Scottish West Division)
jambo is offline   Reply With Quote
Old 27 August 2009, 08:41   #150
Member
 
Country: UK - England
Town: Lymington
Boat name: Farfetched
Make: Solent
Length: 6m +
Engine: Merc. 150 Outboard
MMSI: Lucederterv...?
Join Date: Mar 2005
Posts: 50
Quote:
Originally Posted by neilda View Post
Is there a way to predict sea conditions to prevent people heading out in awful seas?

I tend to look at the Met Office site, but wonder what others do.
Best site for me is MagicSeaweed, a surf forecast for the British Isles which gives swell height, period, wind strength and sea temperature in a topographic map on an hourly moving basis with predictions for 96 hours, works well for me, not so good for solent but channel predictions work.

Met Office as well as localised weather stations and buoys (Boscombe Pier buoy, Bramblenet etc.) should give you a good idea. If in doubt call up the non emergency centre of a local lifeboat station if you are seriously unsure.
__________________

__________________
Ribomaniatic 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 04:20.


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