WWJP74 RJTD 071200 IMPORTANT WARNING FOR OTARU NAVTEX AREA 071200UTC ISSUED AT 071500UTC WARNING(DENSE FOG) SEA WEST OF SAKHALIN, SOYA KAIKYO, SEA WEST OF HOKKAIDO, TSUGARU KAIKYO, SEA OFF HIYAMA AND TSUGARU, SEA OFF SOUTHERN COAST OF MARITIME PROVINCE, SEA OFF AKITA, SEA OFF SADO, SEA OFF NOTO POOR VIS 0.3 MILES OR LESS IN PLACES NXT WARNING WILL BE ISSUED BEFORE 072100UTC =