My shipbuilder is providing this anchor style, proposing a 60kg weight for my 15 meter (50 ft) 60 ton trawler. Offhand I feel this is too light for a stockless, but does anyone have experience with this style of anchor?
Personally, I would still seriously consider the Sarca Excel or even a Super with roll bar.
For your size of boat, and using an articulated roller assembly, as someone else mentioned, you would have a superb all-round performer either way.
The suggested size for your vessel is as follows...
SARCA Excel No 15, L = 27.0 - 29.0, and tonnage = 42 - 57 Ton = 88kg anchor.
Actually your vessel is quite heavy for a 15m or 50' boat, as their recommendations for a 15m vessel is actually only a Excel #7, which is only 36kg, (80lb), because most boats of that length are only about 20-24 tons, so I presume your boat is steel.
The Excel #15 is usually good for a boat about 28m, or ~ 100 feet.
Actually, call me biased, because I have used one for 12 years, but I would go for the Super Sarca # 13....
Super SARCA Anchor No 13, i.e. 74kg or ~ 163lb, for boats 30.0 - 36.0 m = up to 120ft, and weight of 42-60 Tons. Agricultural looking I grant you, but boy they work.
If they can anchor this sucker...boat in pic top right...it'd anchor yours I suspect...
Super SARCA Anchor - anchorright.com.au
Actually, even for a boat of your weight 60ton, the #13 is probably overkill, and the #11 @ 60kg would probably do fine.