Chart correction 40/21 — chart 18626

★18626 16Ed. 12/1/11 LAST NM 21/21 40/21 Add Note “MARINER ACTIVATED SOUND SIGNAL (MRASS) Sound Signals labeled with (MRASS) require user activation. See USCG Light List.” 39°07′38″N 123°40′07″W Legend “(MRASS)” to light “1” 39°13′41″N 123°46′26″W (NOS; 32/21 CG11) ★18628 9Ed. 10/11 LAST NM 51/11 40/21 Add Note “MARINER ACTIVATED SOUND SIGNAL (MRASS) Sound Signals labeled with (MRASS) require user activation. See USCG Light List.” 39°17′09.3″N 123°47′05.8″W Legend “(MRASS)” to light “1” 39°13′41.4″N 123°46′26.6″W (NOS; 32/21 CG11) NM 40/21 SECTION I I-1.4 ★18640 27Ed. 10/15 LAST NM 51/19 40/21 Delete Depth 6 fathoms 37°46.7′N 122°36.8′W Add Depth 4 fathoms 5 feet enclosed by depth contour (6-fathom) centered 37°46.6′N 122°36.9′W (NOS) ★18645 28Ed. 5/13 LAST NM 51/19 40/21 Add Depth 4 fathoms 5 feet enclosed by depth contour (6-fathom) centered 37°46′38″N 122°36′52″W (NOS) ★18649 68Ed. 6/13 LAST NM 25/21 40/21 Add Depth 29 feet “Rep (2021)”, blue tint, and enclosing depth contour (30-foot) [I3.2] centered 37°46′37.7″N 122°36′51.6″W (NOS) ★18680 32Ed. 5/13 LAST NM 25/21 40/21 Add Depth 4 fathoms 5 feet enclosed by depth contour (6-fathom) centered 37°46.6′N 122°36.9′W (NOS) ★19367 41Ed. 5/14 LAST NM 17/20 40/21 Delete Stranded wreck 21°17′22.9″N 157°51′37.4″W Relocate Buoy “4” from 21°17′23.3″N 157°51′37.6″W to 21°17′23.7″N 157°51′37.8″W (NOS; 33/21 CG14)

Source: NGA U.S. Notice to Mariners · edition: 16Ed. 12/1/11

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