Multiple anchors & rodes:
2 anchors from bow @ 170 degrees)
Set and left through wind or tide changes will often end up twisted ''round one another.
Sometimes you are lucky enough to anticipate the direction of (180 degree) rotation, and avoid the twist.
This is pretty much the choice for reversing circumstances, so we end up "dealing /w twist".
I keep the bitter ends of my rodes in a bucket. After each reversal, and subsequent twist, I simply let go the slack rode, and (using the bucket) untwist it round the loaded road, then re-fasten.
2 ANCHORS on 60 DEGREE "V".
Mostly used to anticipate smaller wind-shifts < 90 degrees).
Seldom had problems /w twisting.
Jeff_H makes the points:
That a single rode (with 2 anchors "in-line") can be easier to retrieve than 2 separate rode/anchors. I agree that the process may be simpler (a single action), but suggest that there is a potential problem /w short-scope after the nearest anchor is up, and you''re still retreiving the outer anchor (about 40'' away). At that point, you may have interrupted your retrieval to deal with the "dry" anchor. Mostly no big deal, but one consideration in an "escape the anchorage" situation. The "V" option allows me to retreive the slack anchor, then deal with the loaded anchor in one continuous operation - or even "float" and temporarilly abandon it (with the first anchor aboard).
Jeff also notes that, as the wind moves, you will be left hanging on only one of the 2 anchors. This is true - the "V" only splits the load (more or less equally) between them as long as the wind bisects the angle of set.
My intention, in setting the "V" is not to split the load, but to increase the chances of having a more "in-line" pull under shifting winds.
BTW: I think you may have heard that the whole load is greater than the sum of the loads, not that each load is greater than would be a single. Neither, do I belive this true - the whole is equal to the sum, as long as both are loaded. I''d like to see that math''s, otherwise.
Finally, I''d like to return to my original premise that EACH anchor (in a multiple set) must be able to carry the anticipated load.
Due to the wide variety of anchoring conditions we may encounter, and equipment available; the well-prepared seaman should have several tactics available to him/her for any given situation. Discussions, such as these, provide the variety of experience and opinion that can help decide the best/better tactics in a variety of specifics.
I suggest a Hegelian Dialect (Thesis + Antithethis = Synthesis) approach to this dialog helps provide us each with a great store of knowledge upon which to draw. Very useful, indeed.