Submerged object - Thorness Bay IoW

[Howardnp]

A quick post about an accident my daughter and boyfriend had in my RIB on Saturday.

They were planing at 25 - 30 knots in clear water per charts and had the outboard nearly removed.

They hit something in Thorness Bay which wasn't visible either before or after the incident (a jet skier and another RIB couldn't find anything). Loud bang and they came to a stop.

It broke the casting which the engine pivots on, transom etc intact.

Whatever it was they hit it must have been pretty substantial. they were towed into Hamble Point by another RIB.

If the Rib driver is another forumite, a big thankyou as both daughter and boyfriend, while being unhurt (which is what matters) were in shock.

 

[Sneds]

Cripes! That must have been scary? I think I'd have jumped out of my skin!
Glad their both ok though, hope it doesn't cost to much to repair the damage.

 

[Wiggo]

Check out 'Solent Hazards' - there are some nice rocky ledges that come out a long way in Thorness Bay. Probably one of them.

 

[Howardnp]

No not a ledge... gps track and the paper charts put the boat in safe deep water.

 

[[2068]]

How deep? High or Low tide?

If low or lowish tide, then there are several bits around there that show up as "blue" on the chart, but have very low spot soundings, e.g. "0.4m" about 1/2 mile offshore plus there could be the odd small uncharted rock lurking.

Did they have a depth sounder? What was it reading at the time of the crunch?

If in deep water, then could have been a log or something: looking at the impact point on the outboard might give you a clue.

dv.

 

[clivew05]

Planing at 27 - 30 knots in clear water per charts and had the starboard prop badly damaged (lost 2 blades).

I hit something in Thames which wasn't visible either before or after the incident, there was a thud, and then a judder then a horrible imbalance of outdrives, and vibration. I slowed down and had a look about - but no evidence of anything in the water around the boat - fortunately I still had one good prop and made by way slowly back to the Marina - where I checked to see the damage - everyone else on the boat also noticed the juddering and commented that they thought the bow was lower than normal - which I was a little concerned about - but it was just imagination and no ingres of water anywhere - just juddering and fuel usage as we were only doing about 9knts .. any faster and im sure the vibration would have killed everything - also steering was pretty foul as well - had a lot of compensation to put in due to over steering to stbd..

When I got back to the Marina I confirmed that 2 blades from the outer prop on the duo had dissapeared - nothing on Port outdrive and no damage to inner prop on Stbd outdrive - so not sure what it was that I came into contact with ....

360 degree lookout did not save the day as this was submerged and at a depth of about a meter to have taken the props out - and as already said would have been quite substancial.

There must be a lot of this about ... /forums/images/graemlins/confused.gif

 

[Howardnp]

In reply to Dvinell... it was about 1.5 to 2 hours before HW Yarmouth so not near or heading to low.
Not in any blue bits on the chart but white, so LW issue largely irrelevant.
At 0.4 metres it would (probably) have taken the skeg off not the whole engine as there isn't much in the water at 25+ knots.
Odd unchartered rock? Not sure about that one as it would have had to have been a b...y big one in the position it happened.
Conclusion was, therefore, floating object.
Appreciate the comments but I'd checked all the points made before I posted... which I did as a warning to other forumites around and about the Solent and also as a thanks if the rescuer was on here (who also, I might add, checked the area for whatever it was they hit).

 

[Wiggo]

Hmm, I guess the usual Solent baulk of timber/railway sleeper would be the culprit then. I've certainly passed a whole tree off Yarmouth before now...

 

[Twister_Ken]

Mystery solved

All this rain and floods brings stuff down rivers like cars, five bar gates, holiday cottages, village fetes, etc.

On the Great Buggering in the Wold website there's someone twittering on about the burke in a RIB who ran over their guess-the-weight-of-the-vicar's-wife stand at the weekend.

 

[ChrisE]

Wasn't there a NTM about this area about 2 months ago?

A wreck or summat like it, from memory it came up v. close to the surface. There were a couple of buoys, maybe 100-150m apart marking it when I last looked.

 

[Sneds]

Re: Mystery solved

On the Great Buggering in the Wold website there's someone twittering on about the burke in a RIB who ran over their guess-the-weight-of-the-vicar's-wife stand at the weekend.
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