ZCZC MA27 170343 UTC MAY 26 DANISH NAV WARNING 170337 UTC MAY 26 DANISH NAV WARN 242/26 DENMARK. SKAGERRAK. SKAGEN. SAILING VESSEL SUNK 57-49.7N 010-28.9E. DEPTH ABOVE WRECK UNKNOWN. WRECK UNMARKED. MARINERS ADVISED TO KEEP CLEAR. NNNN