Chart correction N50/22 — chart 97172

97172 (INT 5305) 3Ed. 03/05/20 LAST NM N49/22 N50/22 Substitute Danger circle [K1] "Subm platform ruins" for dolphin 35°37′11.6″N 139°48′44.8″E (See N42, N46/22) (42(503)22 Tokyo)

Source: NGA U.S. Notice to Mariners · edition: 3Ed. 03/05/20

Reference information — always verify against official Notices to Mariners before navigation.