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  1. #1
    Join Date
    Jun 2012
    Location
    Swanwick, River Hamble, UK
    Posts
    8

    Default My Prestige 560 is sinking (well not quite yet)

    Hi everyone,

    I have a Prestige 560 moored in Port Vauban in Antibes which I purchased new from Ancasta in 2017, which has Cummins zeus pods.

    Whilst the boat literature suggests a top speed in excess of 30kn is achievable, in real life over the past 2 years I've basically achieved 28kn day in and day out. However so far this year I'm only getting to 23kn, and the max revs has fallen from 3030rmp to 2800rpm.

    The Cummins engineers have checked the engine and reported it is in fine condition though when they did the service, they actually replaced one of the pods (under warranty). The only thing they can think about is that the boat is sitting heavy in the water - the photo below shows my exhaust half under water (the other photos is of another 560 with the exhaust in the right location).

    However no-one can work out why the boat is lower in the water this year to last. FYI when this photo was taken (on Monday) the water tanks were completely empty and fuel at 60% - even when the water tanks were full last year the exhaust was always way above the water. There is also no water in the bilges. The boat doesn't have any new toys added this year, in fact we removed the 280kg tender when we took the photo.

    I'd be really grateful if anyone has any ideas on what could be making the boat sink - Ancasta in the UK are being really helpful - but Prestige are not........(their only idea so far is to change the propellors at a cost of >10,000!)

    Thanks very much in advance.


    2a_La_Hune_560.jpgAmaris_21_may_19.jpg

  2. #2
    Join Date
    Apr 2008
    Location
    Isle of Man
    Posts
    1,974

    Default Re: My Prestige 560 is sinking (well not quite yet)

    Water inside the submersible bathing platform? Is it solid or cored or hollow?

    Wouldn’t take huge amounts I imagine as it hangs out the back so lever forces etc...

  3. #3
    Join Date
    Dec 2005
    Location
    Live London
    Posts
    3,621

    Default Re: My Prestige 560 is sinking (well not quite yet)

    If it was defiantly higher last year then it can only be down to one thing - weight.

    I appreciate you have looked as fuel, water etc but other than a change in water salinity nothing else is going to change the water line.

    This would seem also to be validated by the slower speed etc. I beleive that some ( all?) lifts can measure the weight they are lifting and I wonder if you start with a lift and replace to water to get a weight?

    I assume that the £10k bill was proposed to be met by you? Pod replacement seems expensive for someone.

    I suspect jfm is you man for dealing with the manufacture. I suspect your case or otherwise will depend on when the performance issue( 28kts) was first raised with them.

  4. #4
    Join Date
    Jan 2002
    Location
    Aberdeenshire, Scotland
    Posts
    4,357

    Default Re: My Prestige 560 is sinking (well not quite yet)

    The exhaust outlet on the other 560 (although from Stb side) appears to be higher up on the hull and the anti foul and copper stripe also seems to be higher up against the swim platform/aluminium strip... also, your overhang (where hull/swim platform splits) appear longer than the other boat ... Could just be picture angle though ....
    Regards, Alf

    I've stopped drinking water .... I have seen what it does to the bottom of our boat!

    "The only time you have too much fuel is when you're on fire."

  5. #5
    Join Date
    Sep 2009
    Posts
    61

    Default Re: My Prestige 560 is sinking (well not quite yet)

    Have a look at the bow and see if you can tell whether it's sitting lower or higher than before?
    Is the boat sitting level or down on port or starboard?
    Will give some indication where the extra weight has been added.

    Then start looking for dead space that could be holding a substantial amount of water. In general anything flat or square will have some dead space behind or below it.

    If there's nothing obvious, then I'd say take the boat out of the water for 2 weeks and ask a surveyor to check the moisture levels along the hull, if there is an amount of water somewhere it should show up.
    Last edited by luptonj; 22-05-19 at 15:33.

  6. #6
    Join Date
    Oct 2003
    Location
    west yorkshire
    Posts
    3,729

    Default Re: My Prestige 560 is sinking (well not quite yet)

    A 560 is a big boat so the usual dinghies/ribs/junk etc shouldn't bother it. Only ever getting 28Knots from new is OK but if everything else is the same and the props and hull are clean and you can only get to 23 knots something is wrong.
    I would book a lift and a very good surveyor. Boats don't get that much heavier without good reason.

  7. #7
    Join Date
    Jun 2013
    Posts
    3,252

    Default Re: My Prestige 560 is sinking (well not quite yet)

    Your waterline looks pretty grubby, what’s the rest of the hull like? Fouling, and not much of it either, will slow the boat considerably.
    If found in the Brexit forum, please return to the real world.

  8. #8
    Join Date
    Jun 2006
    Posts
    1,230

    Default Re: My Prestige 560 is sinking (well not quite yet)

    +1 for fouling. When was the Hull last cleaned?

  9. #9
    Join Date
    Nov 2013
    Location
    Telford
    Posts
    133

    Default Re: My Prestige 560 is sinking (well not quite yet)

    does the 560 have a balsa wood core hull?

  10. #10
    Join Date
    Nov 2004
    Location
    fareham hampshire
    Posts
    1,640

    Default Re: My Prestige 560 is sinking (well not quite yet)

    We had a Fairline Squadron 50 on which the hollow bathing platform filled up with water and this sat stern down bow up considerably.

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