WWJP84 RJTD 170000 VITAL WARNING FOR OTARU NAVTEX AREA 170000UTC ISSUED AT 170300UTC PRESSURE GRADIENT IS STEEP GALE WARNING SEA WEST OF HOKKAIDO, SEA OFF SOUTHERN COAST OF MARITIME PROVINCE WITH MAX WINDS 35 KT WARNING(NEAR GALE) SOYA KAIKYO, SEA OFF HIYAMA AND TSUGARU, SEA OFF AKITA, SEA OFF SADO, SEA OFF NOTO WARNING(DENSE FOG) SEA WEST OF SAKHALIN, SEA WEST OF HOKKAIDO POOR VIS 0.3 MILES OR LESS IN PLACES WARNING(ICING) SEA WEST OF SAKHALIN NXT WARNING WILL BE ISSUED BEFORE 170900UTC =