Reply
 
Thread Tools Search this Thread
 
Old 26 July 2017, 03:10   #1
Member
 
Country: UK - England
Town: penzance
Boat name: not named
Make: ski boat
Length: 5m +
Engine: 150 HPDI
Join Date: Sep 2013
Posts: 224
Sounder - MINIMUM depth

I do lots of waterskiing, regularly in shallow water so I'm keen on retaining lock for the last few feet of water, both on & off the plane. Manufacturers readily state their max depth, but which makes/models go down to the shallowest depth before losing lock?
__________________

__________________
simonl is offline   Reply With Quote
Old 26 July 2017, 03:37   #2
Member
 
Last Tango's Avatar
 
Country: UK - Scotland
Town: Denny
Boat name: Hebridean Storm
Make: Coastline
Length: 6m +
Engine: Mariner F150
MMSI: 235107505
Join Date: Mar 2013
Posts: 1,501
I'd imagine most of them will be fine down to a meter or less but if you encounter a rock "a few feet high" in a "few feet" of water at skiing speed, it's a laminator you're going to need, not a sounder
__________________

__________________
Last Tango is offline   Reply With Quote
Old 26 July 2017, 04:13   #3
Member
 
Country: Ireland
Town: Castlebar
Boat name: Clewless
Make: Valiant DR 490
Length: 4m +
Engine: 60 hp ETEC
MMSI: Awaitng one
Join Date: Oct 2007
Posts: 1,330
RIBase
Sounders will work to very shallow depths however if doing more than circa 10 -12 kn the sounder will struggle to read shallow depths at less than 3 m

TSM
__________________
two stroke mick is offline   Reply With Quote
Old 26 July 2017, 05:57   #4
Member
 
Country: UK - England
Town: hampshire
Length: 7m +
Join Date: Apr 2012
Posts: 353
Quote:
Originally Posted by Last Tango View Post
I'd imagine most of them will be fine down to a meter or less but if you encounter a rock "a few feet high" in a "few feet" of water at skiing speed, it's a laminator you're going to need, not a sounder
and a good Surgeon!
__________________
wellhouse is offline   Reply With Quote
Old 26 July 2017, 06:51   #5
Member
 
Country: UK - England
Town: Leicester
Length: 5m +
Engine: 135hp Mercury
Join Date: Sep 2013
Posts: 880
Can also depend on how much of the transducer is in the water when on the plane.
__________________
paintman is offline   Reply With Quote
Old 26 July 2017, 07:25   #6
Member
 
Country: UK - England
Town: Retford
Boat name: Spy-sea-one
Make: Excel 435
Length: 4m +
Engine: Suzuki Outboard/25/4
Join Date: Oct 2011
Posts: 5,469
set your shallow alarm giving some redundancy i set mine at 2m but in the feet scale you can go to less than 3 feet i think i would set as low as possible then have a run over the ground slowly watching the bottom profile.
__________________
jeffstevens763@g is offline   Reply With Quote
Old 26 July 2017, 07:52   #7
Member
 
Country: UK - England
Town: penzance
Boat name: not named
Make: ski boat
Length: 5m +
Engine: 150 HPDI
Join Date: Sep 2013
Posts: 224
My existing unit (Garmin FF160 I think) has packed up. My transducer is mounted inside the hull and I was previously getting about 3ft fairly consistently. No margin for redundancy - sometimes I'm shallow enough that I can't come off the plane. Well I can, but I can't pull away again without raising the engine. sand not rocks though!
It's this last 3 feet that matters to me so much more than the other 297 feet of the depth capability!
So keen to know which units work best at very shallow depth before purchasing.
__________________
simonl is offline   Reply With Quote
Old 26 July 2017, 08:11   #8
Member
 
Country: Australia
Town: Dalmeny
Make: zodiac
Length: 5m +
Engine: outboard
Join Date: May 2015
Posts: 962
My Lowrance hds gen3 will show accurate depth in shallower less than 1m, when I'm moving over shallow coral I find that 30cm bellow my transducer is enough to clear bottom. You can quite easely calibrate the depth within the menu but I've not needed to, I also have my shallow water alarm set at 1.2m. When travelling at speed I have hit bottom over shallow sand banks and reef because of reaction time to hearing the alarm is to slow when doing 50kmh.

I've also been in water so shallow I hit bottom if I drop off the plane, mainly in silty rivers.
__________________

__________________
jonp 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 11:59.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
×