Heavy is good in no weather
, they just sit there doing not much. When the weather
goes bad they work the gear
harder. Momentum is what it's all about. The bigger the potential momentum the bigger the gear
is needed to stop it. So when the brown stuff is hitting the fan heavier boats need bigger gear than lighter boats.
systems work in such a variable environment
nobody can give you a direct size guide as such.
1lb a foot is a starting point and not to bad a one but only a guide. I'd say a average 40fter odd doing in-shore stuff use a 40lb anchor
. From there you adjust for the boat, the user and the required safety
margin you want, type of anchor and etc. If you are big, heavy and planning on extended cruising
go up in size. The 1lb thing refers to older anchor more than some of the new ones. Whether you adjust for the newer designs or just take the extra safety
margin is up to you, most take the enhanced margin.
So if you and/or your boat are -
Heavy, wide, has big windage, blunt bowed, cruising offshore
or extended coastal, in fast changing weather zones, nervous, sleep like the dead when your head
is on the pillow and things like that go up some sizes.
If you are -
A Nana boater (flat water
, less 10kts wind
and only in full sun), know the seabed you'll be in all the time (note 'all'), skinny, light, a loose unit and the like you can downsize a bit.
In that calc you also have to take the rode
behind the anchor into account. Specing an anchor without taking the rode
into account is silly and could very easily cost you something be it money
, weight, a few things really.
Generally it is a lot easier to go down sizes with the smaller boats than the bigger. Most small boats, approx 30-32ft and down are over anchored. On the same scale as that many 50-60fters are under anchored.
Generally a cruising yacht is the best anchored, the owners have to take more care obviously.
I've used a lb/ft for many many years and if you look at 100 assorted boats you'll find it is pretty damn close as an average. That also means assorted anchoras as well, not just one particular type.
Looking at others is a good idea but make sure they do actually have a decent set-up first. I see many using gear that makes me quite nervous. It's quite surprising what some people get away with.
Hope that helps rather than confuses.
Give us a bit more of you're boats details and we can all have a go at saying what we would use.
Apologies to all Nana's, it is meant in a loving way
Steve - I'm in NZ. You're in the North of ??