WWJP74 RJTD 231200 IMPORTANT WARNING FOR OTARU NAVTEX AREA 231200UTC ISSUED AT 231500UTC LOW 1020HPA AT 36N 142E MOV NE 10 KT WARNING(DENSE FOG) SEA WEST OF SAKHALIN, SOYA KAIKYO, SEA WEST OF HOKKAIDO, SEA OFF SOUTHERN COAST OF MARITIME PROVINCE POOR VIS 0.3 MILES OR LESS IN PLACES NXT WARNING WILL BE ISSUED BEFORE 232100UTC =