Water in hull

Fjordrafting · 09 June 2004, 00:26

Today I drained my 9. for approx. 400 l. of water (the boat is 6 weeks new) the problem is that there still is a lot of water on the sides of the hull, is this normall, did not happen to my last rib, and how do I get rid of this water?

Suzuki416 · 09 June 2004, 00:32

Fjordrafting,

was the water drained whilst the boat was still in the water or was it on land?

Was the bung in?
If no bung, was the Elephants trunk(s) up?
Do you have a bilge pump?
Has it rained there?

If the boat is out of the water then to check water integrity just put the hose pipe in the boat (with bung shut & or trunks up) & watch to see if any water escapes.

Pete

Andy · 09 June 2004, 01:06

For most new RIBs this is not normal, most are airtight. However over time water can get in. Holes in the deck caused by fixings etc. Small cracks in the deck can allow water in etc. Faults in the build. External damage etc ...

If the boat was designed to take water into its hull then normally they are designed to pump out or drain out. There is no way permanent water in the hull is good for the boat unless its in balast tanks.

If the boat is new, go back to the manufacturer and ask them ...

Jeff · 09 June 2004, 07:41

Do your control cables and wiring looms go under the deck and exit at the transom through a duct / tube ?
Is so check that the end is sealed - a rubber gaiter is normal but I prefer to usr expanding foam. If you get flooded ( particularly if carrying divers and swell is washing ovr the transom when kitting up , you may get quite alot of water on board .......... ) it is suprsising how mush can flow through a 100mm tube !!
If this is likely, make sure you get all, or as much, of the water out before re-sealing.
If it is new - as alreday advised, ..... take it back.
If everything is ducted - I assume that the front entry is in side a dry console ? - if not same laws of physics will apply !!
Good luck
Jeff

jwalker · 09 June 2004, 12:22

Quote:

Originally Posted by Fjordrafting

Today I drained my 9. for approx. 400 l. of water (the boat is 6 weeks new) .

Get the manufacturers to correct the problem.

Richard B · 09 June 2004, 12:31

Martin,

A question for you...

You have edited your comments on the "11m major problems" thread and if I remember correctly, you originally mentioned that you had taken the boat apart once you arrived in Norway and re-assembled it. Is this correct?

Fjordrafting · 09 June 2004, 22:08

You remember very well.
I did unschrew every screw exept from the seats. But I only made things thigter since i used Sikaflex on every screw going into glassfiber.
My problem is what to do with the water locked inside the hull?

Tim M · 12 June 2004, 09:59

I had the exact same problem. In the end I drilled a hole big enough to get a decent sized hose in, and syphoned it all out (around 50kg of water in the end). I concluded it was coming in through the holes in the deck which I had drilled in order to fix the console down (I used toggle bolts, so the holes went all the way through). Having drained the hull, I totally sealed all the (bolt) holes with silicone, then resealed the drainage hole with firbe glass etc. Can hardly tell there was a hole there now, and the boat sits much higher in the water at the back now without the extra weight.
If it is a re-occuring problem you could put a "bung" type screw cap thingy on the hole you drill so you can easily drain it again.

Rogue Wave · 12 June 2004, 23:51

we had this problem with a Ribcraft 7.8 ( the only problem we had with it as well, tasty boats) and cured it by fitting a couple of screw in drains at the transom near the side chambers. We had 4 screw in bungs in all and it sorted the problem. re drainage.

The real solution is to stop it getting in and Jeffs suggestion holds water for me (couldn't help the pun sorry)

If you are gonna senfd it back to humber can I quote you for the Towing

jwalker · 13 June 2004, 15:52

Quote:

Originally Posted by Rogue Wave

If you are gonna senfd it back to humber can I quote you for the Towing

You could try that, but isn't it a Scorp?

Fjordrafting · 13 June 2004, 23:26

It sure is a Scorp.

Take a look at the gallery on my website: www.fjordrafting.no
You can also see it on www.scorpionribs.com
It is the black one which we took home to Norway by its own power 6 weeks ago.

Michaels · 22 June 2004, 00:40

It is very interesting to hear about what caused your problem. I would suggest to seal up all screw holes and all other wiring gates going trough the hull, but it seems like you already did that. Please keep us posted.

codprawn · 22 June 2004, 04:16

Quote:

Originally Posted by Fjordrafting

It sure is a Scorp.

Take a look at the gallery on my website: www.fjordrafting.no
You can also see it on www.scorpionribs.com
It is the black one which we took home to Norway by its own power 6 weeks ago.

VERY impressive website - stunning photos - shame it is not in English as well - don't forget a lot of British people visit Norway on holiday and would love to try out a Rib ride.

Bajan · 22 June 2004, 14:58

I unfortunately never entertained the thought that there was a bung or a hole to allow water to escape from within the hull until having a chat with another RIB owner the other day. Sure enough there is one draining into the well at the transom. I'm pretty sure that there hasn't been a bung there since I've had the boat.

1. I assume I need to put a bung in??

2. How do I get the nose of the boat high enough to ensure that it's completely drained? I try to put it on the steepest part of the slip, but I'm not sure if I'm getting all of the water out.

Fjordrafting · 22 June 2004, 23:06

Mr.Graham J. is a great man. He sends two of his staff to Norway next Monday in order to fix my waterproblem.

I have tried to fill the entire boat with water to see what happened. It did not come any water inside eigther console nor the jockeyseats. No airbubbles eigther. Can not find any cracks. And everything has been Sikafleksed very well.

There has been drilled a 15 cm. big hole under the very rear seat. The plate covering it fell off, and there I can see the water. It is 9 cm. under the deck, and 30 cm. deep. It tastes freshwater, the boat is kept im fresh running water though.
On Thursday, I will take the boat up on my trailer and let it stand there for two hours to see for waterleaks, then I will let the water out from the main hull, measuring the amount. You want to gess the amount of water?

Martin