Shichiso consists of seven ports: Mikuniminato in Echizen Province (Sakai City), Wajimaminato in Noto Province (Wajima City), Iwaseminato in Ecchu Province, (Toyama City), Imamachiminato in Echigo Province (Naoetsu) (Joetsu City), Tsuchizakiminato in Dewa Province (Akitaminato) (Akita City), and Tosaminato in Tsugaru region (Goshogawara City).
七湊は越前国三国湊（坂井市）、加賀国本吉湊（白山市）、能登国輪島湊（輪島市）、越中国岩瀬湊（富山市）、越後国今町湊（直江津）（上越市）、出羽国土崎湊（秋田湊）（秋田市）、津軽地方十三湊（五所川原市）