Reply
 
Thread Tools Search this Thread
 
Old 05 May 2013, 01:29   #1
Member
 
Country: USA
Length: no boat
Join Date: May 2013
Posts: 3
Shallow water??

We are considering a RIB. We live on Lake Saint Clair and the water levels are super low. What is the minimum depth I need for a 15-18 foot RIB inboard and outboard, or is it mostly dependent on the motor itself?
__________________
Rfc100 is offline   Reply With Quote
Old 05 May 2013, 02:02   #2
RIBnet admin team
 
Nos4r2's Avatar
 
Country: UK - England
Town: The wilds of Wiltshire
Boat name: Dominator
Make: SR5.4
Length: 7m +
Engine: Yam 85
MMSI: 235055163
Join Date: Jul 2005
Posts: 13,069
RIBase
It's mostly dependant on the motor with an outboard. You're unlikely to find a 18' rib with an inboard.

My 5.4m searider will float happily in 2'6" with the motor down, but I wouldn't want to encounter a wake in that depth.
__________________
Need spares,consoles,consumables,hire,training or even a new boat?

Please click HERE and HERE and support our Trade Members.

Join up as a Trade member or Supporter HERE
Nos4r2 is offline   Reply With Quote
Old 05 May 2013, 02:26   #3
Member
 
Country: USA
Length: no boat
Join Date: May 2013
Posts: 3
Quote:
Originally Posted by Nos4r2 View Post
It's mostly dependant on the motor with an outboard. You're unlikely to find a 18' rib with an inboard.

My 5.4m searider will float happily in 2'6" with the motor down, but I wouldn't want to encounter a wake in that depth.
Thank you for the reply. I'm totally new to RIBs, and there's a lot to learn. We don't even have that much depth right now, probably 2' max.
__________________
Rfc100 is offline   Reply With Quote
Old 05 May 2013, 02:37   #4
RIBnet admin team
 
Nos4r2's Avatar
 
Country: UK - England
Town: The wilds of Wiltshire
Boat name: Dominator
Make: SR5.4
Length: 7m +
Engine: Yam 85
MMSI: 235055163
Join Date: Jul 2005
Posts: 13,069
RIBase
I wouldn't even be considering a planing hull in that little water unless it's jet drive!
__________________
Need spares,consoles,consumables,hire,training or even a new boat?

Please click HERE and HERE and support our Trade Members.

Join up as a Trade member or Supporter HERE
Nos4r2 is offline   Reply With Quote
Old 05 May 2013, 02:50   #5
Member
 
Country: USA
Length: no boat
Join Date: May 2013
Posts: 3
I'll look up jet drive; I don't know what that means, but I'm sure it will cost more...one of the RIBs we are looking at is an Avon Seasport.
__________________
Rfc100 is offline   Reply With Quote
Old 05 May 2013, 07:42   #6
Member
 
Low Flyer's Avatar
 
Country: UK - England
Town: Portsmouth
Boat name: Cinsirrah III
Make: Oceans
Length: 8m +
Engine: Twin D3 160 Diesels
MMSI: 235089712
Join Date: Sep 2011
Posts: 462
We have a 5.5m jet RIB. She floats in 12" of water and does 46 knots. Look up Caribe jet RIB. Great fun boat.
__________________
Low Flyer is offline   Reply With Quote
Old 05 May 2013, 08:35   #7
Member
 
Ian_st's Avatar
 
Country: UK - England
Town: Bristol
Make: Humber
Length: 5m +
Engine: Mercury 60 outboard
Join Date: Jul 2012
Posts: 114
Go careful with jet drives in shallow water. It pulls water from underneath page boat, and if vey shallow pulls up stones etc. learnt this when I destroyed the impeller on a seadoo sportster.

Most jetskis which use the same principle suggest that the min depth is 1m to prevent this. They all float in shallow water but there can be issues
__________________
Ian_st is offline   Reply With Quote
Old 05 May 2013, 08:40   #8
Member
 
Country: France
Make: Joker Booat
Length: 5m +
Engine: Yam 70
Join Date: Sep 2007
Posts: 430
Where on Lake St Claire do you live ?

I lived on the water near Tecumseh for a while and ran a twin outboard RIB from Lake Shore. There's usually more than 2' of water once your away from the shore line. Have you had some very dry summers over the last couple of years or has the ice further north not melted yet.
__________________
landlord is offline   Reply With Quote
Old 05 May 2013, 09:03   #9
Member
 
Al Baker's Avatar
 
Country: Other
Length: no boat
Join Date: Oct 2012
Posts: 109
If its shallow there then a jet boat is the most sensible option. Can recommend these:

https://www.google.co.uk/url?sa=t&so...GSR8-UPPrHRn6A

Or better still an airboat. Then you can head out in ice conditions in any depth. Neither have a rubber ring round the gunwale but then that's one thing less to fix right?
__________________
Al Baker is offline   Reply With Quote
Old 05 May 2013, 09:37   #10
Member
 
Country: UK - Channel Islands
Town: Jersey
Boat name: Archangel
Make: Ribcraft
Length: 6m +
Engine: ETec 225
MMSI: 235063789
Join Date: Sep 2008
Posts: 1,005
I'm a great advocate of shallow water cruising; I've done a fair bit myself. If you can see the bottom it's not too much of a bother but if you're in a muddy river or an estuary then it's a different thing altogether. You can feel very exposed in shallow water when you have no idea where the bottom is, believe me. As for engines, jet drives are better but expensive. Have you considered a couple of second hand jet skis? I bought a jet ski last year and now hardly use my rib at all. Here's a video of one of my trips that went wrong:
__________________
www.flickr.com/photos/gj0kyz
GJ0KYZ is offline   Reply With Quote
Reply


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




All times are GMT. The time now is 04:23.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.