Its not an ideal setup as the chain pipe is near the bow and it doesn't self stow. The chain pipe below decks is 2" plastic waste pipe and I have the top of the chain pipe attached to the deck fitting via a short length of wire reinforced flexible hose so a crewmember can pull the pipe aft to distribute the chain. It also needs a crew member handy in the forepeak to clear any jams when paying out as it could do with being either a significantly larger diameter or a little smaller with a metal bottom fitting with a smoothly rounded entry to stop the chain jamming. The bunk has to be cleared and the top of the locker has to be opened when paying out so the pipe is free to swing as if the chain is well stowed and it doesn't try to drag it forward it wont jam.
I think it was the original owner who got rid of the central chain pipe that was a straight drop into the deep aft center locker in the V berth so must have self-stowed nicely and run freely. I suspect domestic harmony was not enhanced by a sizable pipe blocking easy access forward and dividing couples in the V berth. Unfortunately I cant reinstate it without a mutiny as the cook grabbed that locker for our heavier provisions!
Although the deck fitting is the usual upsidown truncated J pipe with a flap, it helps to lash a heavy plastic bag over it in heavy weather to reduce the amount of moisture that gets below.
The chain and warp are marked every 5 meters so scope of 5 x depth can easily be allowed. The anchor lives in deck chocks and is lashed in place. I also have fitted a chain pawl for easier recovery, NOT on the stem head but aft of the forestay, slightly offset so the chain clears the fitting.
Breaking out a well dug in anchor is likely to need a line back to a primary winch with a snatch block to the toe rail near the jib track if you don't have a windlass. I don't like using a mast winch on a deck stepped mast for horizontal loads. Could be embarrassing if a big wash came past right at maximum load and the mast jumped the step or the heel tenon failed.