Some boats have an automatic anchor chain counter fitted, sadly I have yet to encounter one which works reliably without constantly needing to be recalibrated. So, my preferred option is to mark the anchor chain.
There are various ways to do this but your first task is always to empty the chain out of the locker and lay it out on the ground or pontoon, taking the opportunity to clean out the locker and check the bitter end is lashed to the U-bolt with strong but cuttable cord rather than a rusty shackle that could prove difficult to undo or cut in an emergency.
Now measure from the anchor fitting to the water, as you shouldn’t include this in your calculations. For instance if your anchor is 2m above the waterline when stowed, you need to add that 2m to your first measure. Then you just mark it at 5m intervals, so in this case make your first mark at 7m, then measure another 5m and mark it 10m, 15m, 20m etc.
The simplest way to mark the chain is by painting the links with a different colour for each depth, but if you anchor often, this soon wears off. Coloured cable ties are another cost-effective and easily replaced method.
Better still are the coloured plastic anchor chain markers you can buy online and in some chandleries, although you do need to know your chain link size for them to fit correctly. If in doubt let out more rode than you think, as it’s no use left in the locker.
The simplest and cheapest method is to use a handful of different-coloured cable ties but you can buy proper plastic chain markers if you know how what size your chain links are.
Carefully take the chain out of the locker and lay it out on the pontoon so it’s easy to measure. Now is a good time to clean out the locker and check the state of your chain and fixings.
Measure the distance from the anchor stowage point to the water so your starting point is where the chain touches the water rather than end of the roller – in this case, 1.4m.
Mark the starting point clearly so that when you are retrieving the anchor you know when it is clearing the water and can slow down the winch accordingly. I used red cable ties for maximum visibility.
Now mark it every 5m with either a different colour each time (if you can find and remember them) or alternating colours for every 5m. I chose orange for 5m, 15m, 25m and 35m, and blue at 10m, 20m and 30m.
I finished with more red ties at 40m to show me that the chain is almost all out. Lastly, I produced a little table to stick next to the helm and help me remember.
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