3 Dutch submarines in dry docks for maintenance

HNLMS Zeeleeuw (S803), HNLMS Dolfijn (S808) and HNLMS Walrus (S802) 

http://slide.mil.news.sina.com.cn/h/slide_8_294_32829.html#p=1

Photo - Willem Severins

HNLMS Zeeleeuw (S803)

HNLMS Dolfijn (S808)