Drowning RIB

[250kts]

Spent the weekend over in Chichester on a function. On the Saturday the other half and I went for a stroll around Bosham. Saw this in the water ....

Looks like it got so much rain in it, that the transom is below the water and it is only the tubes now keeping it afloat. Why do people invest money and then not look after it??

[chewy]

A little low in the water isn't it.

[Chris]

His Bilge pump has probably failed or the battery is dead. Being a fiddler my natural instinct would be to go and fix it.

[spartacus]

Originally Posted by Chris

His Bilge pump has probably failed or the battery is dead. Being a fiddler my natural instinct would be to go and fix it.

My instinct too. The weight on the bow line will be excessive too, given the volume of water that's sloshing about inside.

[willk]

Originally Posted by Chris

Being a fiddler my natural instinct would be to go and fix it.

Originally Posted by spartacus

My instinct too.

Bit of a swim for poor 250kts surely, him in his best party tucker and all?

[Polwart]

Originally Posted by spartacus

The weight on the bow line will be excessive too, given the volume of water that's sloshing about inside.

there is no extra "weight" on the bow line - but i've always assumed that the key factor that determined the force on a mooring line would be the windage, which will actually have been reduced by it sitting so low in the water.

[Chris]

Originally Posted by willk

Bit of a swim for poor 250kts surely, him in his best party tucker and all?

Come on mate they are searider owners after all... they would probably both be carrying rolls of Gaffa tape, bowie knives in their teeth and smart drysuits on !

[willk]

Originally Posted by Polwart

there is no extra "weight" on the bow line - but i've always assumed that the key factor that determined the force on a mooring line would be the windage, which will actually have been reduced by it sitting so low in the water.

Disclaimer: What follows is pure speculation

If the rib is lower in the water, it's displacement must have increased, although the water has some limited egress. Moorings are rated by displacement or gross tonnage? Wave action provides powerful and sudden stress to a mooring line; more mass, more stress??

hmmm - thinking has suddenly given me a thirst for some Electric Lemonade...

[willk]

Originally Posted by Chris

Come on mate they are searider owners after all... they would probably both be carrying rolls of Gaffa tape, bowie knives in their teeth and smart drysuits on !

oooooh! Are they? Careful, "They'll 'ave you mate!"

[Polwart]

Originally Posted by willk

Disclaimer: What follows is pure speculation

If the rib is lower in the water, it's displacement must have increased, although the water has some limited egress. Moorings are rated by displacement or gross tonnage? Wave action provides powerful and sudden stress to a mooring line; more mass, more stress??

hmmm - thinking has suddenly given me a thirst for some Electric Lemonade...

Equally as speculative... boat with larger mass is harder for the waves to move, therefore those periodic loads are damped/reduced?

Moorings are rated by weight - but I assumed that was just an easy metric... how many sq ft is your boat's windage? There's probably a reasonable correlation that if a boat weighs less than X tonnes it also has less than Y m2 of windage (otherwise it would be too unstable to keep on a mooring). But that is all guesswork - maybe someone well set me straight...