A story of a near tragedy

William_H

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Heard a talk yesterday from 3 older gents who in February (mid summer) were fishing about 7NM off the Fremantle coast when disaster struck. Their boat capsized and mostly sank and they were then in the water for 16hrs until rescued.
The boat about 5metre half cabin wooden vessel was bought from South Africa and shipped to Fremantle in container. It had been about 10 years on a trailer not used.
On this the 3rd outing by the owner the boat started to take in water at the transom. The boat reputedly had a sealed floor with buoyancy under floor. When hatch was lifted it was found to have a lot of water in bilge. Wind was about 18 knots and water choppy.
The 3 fishermen managed to get lifejackets on. These were the cheapest Mae West type with big pillow on the front and smaller behind the head. However within seconds the craft filled with water and capsized. It was very difficult to hold on to up turned hull. The owner tried to dive down to retrieve the EPIRB in the cabin but was unable to find it. He did fortunately manage to retrieve a short piece of rope. The 3 fishermen tied themselves together and set out for an island about 2 miles away. This was unfortunately to windward and progress was so slow so abandoned. This was late in the afternoon.
They floated then for 16 hrs total through the night until near noon the next day they were rescued by water police. They were very cold near death from hypothermia and had swallowed a lot of salt water.

They had failed to set up a watch with the local Sea Search and Rescue organisation by radio. Had they logged in, their failure to advise of a safe return would have had them rescued much quicker. Only relatives concern after they had not returned long after they were due and after dark triggered the rescue.
The required flares EPIRB and fixed radio were all iretrievable in the sudden swamping and capsize. Fortunately lifejackets also madated by law were carried and donned.

It struck me that buoyancy under the floor of a typical vee bottomed mobo is perhaps the worst place to locate buoancy. Once the boat is flooded then the movement of waterr in the hull and with the buoyancy down low it was inevitable that the hull would capsize. I think they had outboard motors which again have centre of gravity quite high along with the mass of the wooden cabin. I think buoyancy should be at the sides of the hull and nearer under the gunwhale not under floor.
When the hull was towed to shore only the bottom of the bow was out of the water

Of course there is the danger of buying S/H where extensive wood rot had been panted over to make it look good. Wooden boats especially those on a trailer are very susceptible to hull damage through collection of rainwater. olewill
 

lw395

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7nm offshore is quite a long way to take an old 16ft wooden boat, unless you have good reason to have absolute faith in its seaworthiness.
Epirbs, reporting procedures and all that are good things, but no substitute for a sound boat.
 

oldsaltoz

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As will said, buoyancy was a problem, having just a void that rapidly fills can lead to major problems as described.

However, add a bundle of those foam stick the kids play with in the pool could have prevented this.
The water entering the area below the deck would have only filled the small voids between the rods leaving more than enough buoyancy to keep her not only floating but fully operational.

Also note the pool sticks are made of a closed cell foam, so do not get waterlogged over time.

I have re-decked only 2 runabouts, both due to rotted ply under glass decks. Both were filled with pool sticks. This is not something ney, the boating industry and boat repairers took almost no time to realise the pool sticks were a closed cell foam and a much much cheaper method of installing stabilised buoyancy.

Good luck and fair winds. :)
 

lw395

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As will said, buoyancy was a problem, having just a void that rapidly fills can lead to major problems as described.

However, add a bundle of those foam stick the kids play with in the pool could have prevented this.
The water entering the area below the deck would have only filled the small voids between the rods leaving more than enough buoyancy to keep her not only floating but fully operational.

Also note the pool sticks are made of a closed cell foam, so do not get waterlogged over time.

I have re-decked only 2 runabouts, both due to rotted ply under glass decks. Both were filled with pool sticks. This is not something ney, the boating industry and boat repairers took almost no time to realise the pool sticks were a closed cell foam and a much much cheaper method of installing stabilised buoyancy.

Good luck and fair winds. :)

It actually takes a lot of 'pool sticks' to have enough buoyancy to float the engine etc, and if that buoyancy is below the engine, it's all going to be more stable upside down.
I was looking at those things here in the UK when I needed closed cell foam for fendering, it seemed very expensive at the time?

None of this changes the fact that the hull was not sound and should have been either made sound or chopped up for firewood.
 

dancrane

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I've now accumulated over a hundred empty 2-litre plastic bottles for stuffing into buoyancy chambers in my old boat. Total weight of empties, 4kg. Price? Zero. Buoyancy? 2000N.

Out of interest, what would the sea temperature be off Fremantle, in midsummer? Not too chilly I'd reckon. Shocking how much faster people perish in northern European waters.

And (this is only ghastly curiosity)...what's the sharks-per-square-mile count, round those parts?
 

NormanS

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Interesting that in Oz there is a "Logging in" procedure, where if you don't subsequently report your arrival, "They" come looking for you. There is nothing like that in the UK.
 

rbcoomer

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It struck me that buoyancy under the floor of a typical vee bottomed mobo is perhaps the worst place to locate buoancy. Once the boat is flooded then the movement of waterr in the hull and with the buoyancy down low it was inevitable that the hull would capsize. I think they had outboard motors which again have centre of gravity quite high along with the mass of the wooden cabin. I think buoyancy should be at the sides of the hull and nearer under the gunwhale not under floor.
...

A valid point, but the object of the foam is to fill spaces that would otherwise fill with water. In itself it's not going to stop the vessel sinking, but should reduce the internal volume that can fill - thus maintaining freeboard if designed correctly. I've looked into the foam as I'm rebuilding a GRP 'skiboat' and although the old foam was waterlogged, this happens over time and only when sealed sections are compromised. Foams have also improved and will maintain closed cell integrity longer than 70's & 80's foams.

I'm still going to add extra buoyancy via sheets of pre-formed, closed cell foam under the gunwhales and along the sides, but you start to get into self-righting vessels rather than just buoyancy! Interestingly a friend's Maxum has no buoyancy at all under the floors, so if swamped or holed below waterline would presumably sink like a brick?
 

NormanS

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Oh!! I thought you could log your passage with HMCG. I certainly have done that on longer passages, night and solo runs.

Yes, of course you can, but if you don't complete your "TR", nobody will come looking for you. In the very early days of VHF, and reporting your intended passage to the CG, it did happen occasionally, but there were so many anchorages with no VHF reception, that it very soon became obvious that to send lifeboats out for everyone who didn't report in, was totally inappropriate.
 

William_H

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The Fremantle Volunteer Sea Rescue group are a volunteer organisation however they are heavily subsidised by the government in lieu of the government providing the service. Even though they are some what paralleled by Water Police and Marine and Harbours authority all of whome monitor ch 16 and run a fleet of (rescue) boats. The FVSR is also paralleled by a similar group 20km up the coast and another 20km down the coast. Together they support VHF repeater stations so that there is good coverage both north and south of Fremantle for about 200Kms and another at Rottnest to extend VHF reach out further. Basically the FVSR encourage people to join the group for 15 squid per year. For this they give you a call sign (FG 2228) and record all your data on computer. ie contact numbers and boat details. They provide 24 hr monitoring of the calling channel for log on and off and of course ch16 for emergencies. They have facility to recieve DSC calls but DSC is not so common around here. Also they promiss to provide towing for non members to safety or for members to home base. They have 4 rescue boats on standby. Plus the government run a couple of rescue helicopters.They also provide monitoring of some HF SSB frequencies. They do training for Radio licence. Yes the best part is they do encourage logging on and off for all pleasure boaters. Works well and is a result of many tragedies in the small trailer MOBo category over the years. olewill
 

dancrane

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Is it a valid concern or will exposure get one first out there ?

Well, exactly! All those tropical-set movies with people floating around, teeth chattering from fear or chills...I'm not sure where the truth starts and ends.
 

prv

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Oh!! I thought you could log your passage with HMCG. I certainly have done that on longer passages, night and solo runs.

And they will answer you politely and write it all down in the watch log, and that's the end of it.

If your wife later phones up worried that you didn't call for your habitual bedtime chat, the logged information will be of some use in establishing what your plans where and when you left. But that's about it. Under all normal circumstances the Coastguard will not check up on you just because you told them what you were up to.

My mum always wants to know if I'm going cross-Channel, and expects a text on arrival. At the age of 32 I don't object to this parental nose-pokery because it's the only likely trigger for a search if we were overdue.

Pete
 

oldsaltoz

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Seajet

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oldsaltoz,

when off Salcombe UK South Coast in the late 1980's we came across a Very Large Shark; there were lots of Basking Sharks about but this one was very different, moving in a purposeful way and had an attitude, coming towards us and it seemed eyeing us up for lunch - approaching & formating on the boat rather than shying away as the Basking jobs did.

We were in a 30' boat and this thing was well over half the length; I have no doubt whatsoever we have Great Whites around...
 
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William_H

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While fear of sharks might be a real emotional issue stistically a shark attack is the least of your worries. Compared to drowning or hypothermia. So if you are in the position you have to tell yourself to not worry about sharks but worry about what mis likely to kill you. Meanwhile depite a few shark attacks this last season I will happily swim and snorkel in the ocean even off a boat weel out. For all the sharkk attacks there are a lot of people in the water here. Re water temp I( don't know an actual figure certainly a lot warmer than UK. I clean my hull regularly without wet suit although in winter I will put a wet suit jaket on. good lcuk olewill
 
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