We have not had an anchor thread for a while and no one seems to want to discuss politics or religion so let's make it anchors. This is my latest which I had to make to replace an identical anchor that is caught on a wreck just off the coast here. It's not lost, I know where it is!
This is my version of an Ultra but the dimensions and geometry are the same as a rocna 10kg anchor. The main difference is the hollow shank which Has a triangular cross-section versus the ultra's diamond shape. The keel is deeper than that of the ultra and the spade. The plating is all 3mm stainless in 316.
Bare weight is 7 kg.
Total weight 11.5 kg.
The three point weights are end of shank 0.2 kg.
Wing weighs 4kg
Point weighs 6.6 kg so there is more than a 50% ratio of the anchor at the point. These are dry weights of course and with the chain added and in a few metres of water the buoyant shank will mean the ratio will be higher again.
This is how the anchor always lands on the bottom.
Keel is full of lead.