On Tue, 03 Sep 2013 07:26:09 +0700, Bruce in bangkok
wrote:

But Gregory, a 30 lb. danforth will hold a boat perfectly well. It
depends on the anchorage and the weather and water.

===

We have used a 30 lb Danforth as a day anchor in some pretty severe
conditions. With enough scope and a good bottom it holds our 70,000
pound trawler just fine (30 kt winds, exposed anchorage with 3 to 5 ft
seas).