Chart correction N21/23 — chart 71252
71252 4Ed. 01/16/21 LAST NM N18/23 N21/23 Change Range of beacon to 8/5M 1°11′52″N 103°48′26″E and add legend "(dual intensity)" Range of beacon "Serebut" to 8/5M 1°14′50″N 103°42′05″E and add legend "(dual intensity)" (5(27, 28)23 Singapore)
Source: NGA U.S. Notice to Mariners · edition: 4Ed. 01/16/21
Reference information — always verify against official Notices to Mariners before navigation.