May 23, 2013

How to install a mooring!

Filed under: Boat, Fishing — tattiehouse @ 20:05

Been busy lately with various things but one thing I have managed to do is put the boat in the water.

The first and most difficult part was to install a mooring of suitable size and strength for the boat. I googled about for the various designs and options and the general idea is that the length of rope/chain from the anchor/concrete slab sinker is about 1.5x the depth of water i.e. 10m water, 15 metres of chain/rope.

The other key factor is that the chain from the sinker, for the first few metres is pretty heavy and then the next section of chain not so heavy. The idea being that the weight and combined length of the chains make any pull from the boat to the anchor a horizontal action and effectly dampen the stresses to avoid any snatch on the mooring chain/rope/boat (in a good setup, the anchor is more of a last resort as the weight of the chain should besuffcient to stop the anchor ever being called into action).

So, our boat is about 1200kg give or take and without doing all the maths about how much water the boat displaces and how much the wind may affect it, we went with an anchor that’s a bit like a Bruce anchor .
The anchor weighing between 150 and 200kg, about 4 metres of 40mm chain (another 150-200kg), then about 5 meters of 20mm chain (maybe75-100kg) and then about 8 or 9 metre nylon riser (big rope). Finished off with a nice mooring bouy that has a swivel integral to it’s body (to stop the chain/rope twisting).

How to get all of this to the right place in the bay and drop it off, again googled a few things and this seems to be the way to do it…..

Mooring Boat

Mooring Boat













However, not got those on Rum and I wasnt going to pay for one to come over so the initial plan was to take the gear down to the low tide mark and lift it on some barrels (as the tide comes in) and take it out to the right place and drop it off.

Instead, I went for a DIY job that was a little Heath Robinson –

The plan being to put everything on the barge and secure with a single rope. Lay the chain in a way that would let it go out in the correct order and put a bouy on the pickup of the anchor so that a) i can see it on the seabed, b)try to make sure it landed the correct way up.

So once in position, cut the rope and it all drops in the sea nicely!

Pictures tell the story so here goes (not in order as WordPress and Internet Explorer seem to be struggling tonight so they’ll just have to go up in the order they feel like going on!)…..

This is me cutting the rope!

This is me cutting the rope!

Towing the mooring into position!

Towing the mooring into position!

Rum Boat Slip - waiting for the tide.

Rum Boat Slip – waiting for the tide.

Chain etc laid out so it goes off in order - notice the single rope holding it all on.

Chain etc laid out so it goes off in order – notice the single rope holding it all on.

Big Mooring Buoy

Big Mooring Buoy


Mooring Raft

Mooring Raft


Mooring Raft with wheels!

Mooring Raft with wheels!

Ifor Williams Trailer wit hthe boat looking on!

Ifor Williams Trailer wit hthe boat looking on!

Mooring Dropped into position.

Mooring Dropped into position.



  1. The wheels on that ‘mooring raft’ look very familiar?

    Comment by Sean — May 23, 2013 @ 20:27

  2. Good to see the shit in the croft finaly being put to some use! Dad’ll be happy.

    Comment by Conor Bolas — May 24, 2013 @ 17:17

    • Yep, looks good in the bay. A small epic to get it out but nothign too major. The journey from skye on CalMac was more of an epic than anything else….

      Comment by tattiehouse — May 25, 2013 @ 12:11

      • looks really good. as long as it is left alone by yachties or is it snotties.

        Comment by alan smith — May 27, 2013 @ 07:40

      • yachties aye, they just park close to it for now! Had a few windy days and it’s been fine so far… The spec of it should take a larger boa such as the Shearwater though….

        Comment by tattiehouse — May 27, 2013 @ 11:08

  3. Hi Mr and Mrs Bolas. Glad to see you are back in action. I see you’ve got your priorities right- boat in the water before you get a roof over your head. Good luck with the rest of the work. Mart and Jan. (in Corsica)

    Comment by martin — May 27, 2013 @ 20:28

    • Hi Both,

      Good to hear from you. Corsica – lucky as!

      Will let you know when we’re down sowth next and try and catch up. If not, I’m sure we can in the winter….


      Comment by tattiehouse — May 27, 2013 @ 21:29

  4. Loving that approach! Simple but effective.

    Just hope that the equivalent of the marine “Waffen SS” doesn’t start complaining about it being a “navigation hazard” and want you to start adding blinky lights, reflective tape and radar deflector things!! πŸ™‚

    Comment by Daniel Colville — May 27, 2013 @ 21:10

    • Hi Dan,

      Should be fine. It’s tucked in out of any routes to either of the piers or slips on Rum so should be fine.

      It’s exactly the same style as they use on other moorings in the area too. Just got to keep the big boats off it!


      Comment by tattiehouse — May 27, 2013 @ 21:28

      • Ahh… I think you’ll get some bother with them, especially the W.A.F.I’s (Ask Norman for Meaning of that terminology!)

        Stick a label on it “Max gross Tonnage permitted 0.5t ” or something, that should scare them away enough πŸ™‚

        Comment by Daniel Colville — May 28, 2013 @ 11:26

  5. Why so few new posts this summer? I’m sure it can’t be for want of interesting new things to report. I expect you’re too knackered with all the work you’re doing on the house for blog posts but remember you’ve got your public to keep happy!

    Comment by neilking — July 20, 2013 @ 20:45

  6. Oh wow Ian! A new post! Oh wait.. nope.. nothing for 4 months 😦
    What’s happening?! Any progress?

    Comment by Daniel Colville — October 9, 2013 @ 23:23

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