Coast Defense Study Group is the non-profit corporation formed to promote the study of coast defenses and fortifications, primarily those of the USA.
According to PR-model, cdsg.org is ranked 42,724th in multilingual Wikipedia, in particular this website is ranked 23,582nd in English Wikipedia.
The website is placed before stoneforest.ru and after jarir.com in the BestRef global ranking of the most important sources of Wikipedia.