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Old 06 June 2007, 05:02   #1
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Rib Virgin goes deep

Ok - as you know we have finally bought a boat but we need a couple of things for her - a depth sounder and a compass.

There is already a mounting block for a compass so this shouldn't be too bad - looking at a Plastimo Offshore 75 or 90 but I would like it to be as flat as possible as it will sit on the console. Any good or bad things about these compasses I should bear in mind?

Depth sounders are more difficult. I am not keen on drilling holes in the bottom of the boat - if it don't leak, don't drill - are there reliable transom mounted transducers or what other options are available? I only really know about the drilled hole variety for yachts, are there things to be born in mind when buying them for a rib?

Many thanks
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Old 06 June 2007, 05:23   #2
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Hi Sarah
I have a raymarine depth gauge and it works well
In one of the boaty mags last month there was a group test on them..you might want to check it out
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Old 06 June 2007, 06:23   #3
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Hi Sarah
I have a raymarine depth gauge and it works well
In one of the boaty mags last month there was a group test on them..you might want to check it out
Thanks Tony - I'll pop down to WHSmith. How have you attached yours?
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Old 06 June 2007, 06:31   #4
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Sarah

Hi

I have recently refitted my electronics to swap from Garmin to Raymarine, and for both sets have used Transom mount transducers. If you do a search you'll find even these can be glued inside the hull.

For various reasons I don't have enough access to my hull outer skin so am forced to use them screwed to the transom.

One point to make sure of is that the screws are sealed with a little sealant to avoid any water ingress between the fibreglass and plywood.

In all the miles I did with the small garmin transducer I found it worked well at nearly all speeds and always stayed put.
The much larger Raymarine transducer however kicked up on its first trip out and so didn't work at speed which I'm looking for a solution for.

Nasher.
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Old 06 June 2007, 06:39   #5
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Originally Posted by Nasher View Post
I have recently refitted my electronics to swap from Garmin to Raymarine, and for both sets have used Transom mount transducers. If you do a search you'll find even these can be glued inside the hull.

For various reasons I don't have enough access to my hull outer skin so am forced to use them screwed to the transom.

One point to make sure of is that the screws are sealed with a little sealant to avoid any water ingress between the fibreglass and plywood.

In all the miles I did with the small garmin transducer I found it worked well at nearly all speeds and always stayed put.
The much larger Raymarine transducer however kicked up on its first trip out and so didn't work at speed which I'm looking for a solution for.

Nasher.
Thanks Nasher. This is what I wanted to hear. The hull has a sharp V and I cannot see that a drilled transducer would work very well.

Thanks for the advice about the sealant as well.
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Old 06 June 2007, 06:44   #6
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What GPS/Chartplotter is fitted?
You may find it can take a depth "add in", some will.

This may save you bucks on buying something just for depth.

If not the other option would be to get something that is GPS/Chart/Depth and stick the old kit on E-bay or here.
Garmin, Raymarine and us all do combo units.
This, whilst may be a bit more expensive, will save you dash space.

Cheers
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Old 06 June 2007, 06:51   #7
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Sarah, do a bit of ribnet searching. There's tons of stuff stored here.

Congratulations on your purchase btw.
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Old 06 June 2007, 07:27   #8
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Quote:
Originally Posted by Jon Brooks View Post
What GPS/Chartplotter is fitted?
You may find it can take a depth "add in", some will.

This may save you bucks on buying something just for depth.

If not the other option would be to get something that is GPS/Chart/Depth and stick the old kit on E-bay or here.
Garmin, Raymarine and us all do combo units.
This, whilst may be a bit more expensive, will save you dash space.

Cheers
I can't remember the name of the GPS - not a name I am familiar with. I think it was the original one with the boat making it over 8 years old. I can discribe it, it was hung on a bracket rather than inbuilt, it was a portrait display, single colour - like a calculator - you can set points and it has a compass type digital display, underneath it gave speed in knots on the left - can't remember on the right - pretty ancient I think and rather big.

I'm interested in the combo units - GPS has moved on so much since the boat was built and if we could get one that would do everything - am I right in thinking you can get ones that will relay your exact position to a digital VHF radio - how fab is that?
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Old 06 June 2007, 07:31   #9
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Sarah, do a bit of ribnet searching. There's tons of stuff stored here.

Congratulations on your purchase btw.
Thanks JW

This forum has opened my eyes - what a fab community...
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Old 06 June 2007, 09:03   #10
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Sarah,

With the make and model it would be easy to find if depth can be added.

The new DSC VHF's units can be connected to your GPS so if you are in distress and you press the button to send a MAYDAY your lat and long is sent at the same time.

Some of the more modern plotters can display incomming distress calls.
They can also plot locations of other vessels fitted with DSC by using the "position request" setting on the DSC VHF.

So yes they have come a long way in ten or so years.
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