Originally Posted by DavefromNZ
Sorry I forgot to mention above that our anchor is 25kg. One issue worth considering about size is the strength of the windlass (our one is 1600W). At times it really strains pulling our 25kg anchor out from buried in thick mud and lifting kgs of mud. Also I wonder what is a maximum depth we could anchor in? I wouldn't anchor in more than 30-40m depth (say for a day fishing) as I expect that the windlass would not lift
all the weight.
I always use the engines to keep the anchor chain straight down when I lift the anchor. If the anchor is stuck, I use the engines again to break it loose. I try to make the windlass job as easy as possible.
Your 1600w windlass should be fine with a heavier anchor. Remember that you are only lifting the portion of portion that is vertical, i.e. not laying on the ocean floor. But, ask your preferred anchor/windlass company for an expert opinion.
My 450 has a 1700w windlass and I use a 80lb Manson. My ex-powerboat had a 1400w windlass with a 60lb Manson and 400ft of chain. In my area, anchoring
in 100ft+ of water
is almost required due to the quick drop of the ocean floor. I've never had a problem and I've lifted some humongous kelp plants with my anchor.