Shelter Island

Name: Shelter Island
Address: United States

United StatesUS XSI

Post resource

Location

Codes & time

UN/LOCODE

US XSI

Coordinates (DMS)

41-04.0N 072-20.0W

Decimal (maps)

41.066667 -72.333333

Time zone

America/New_York

Now: UTC-4

Standard: UTC-5

DST from 08 Mar 2026 03:00 EDT; standard time from 01 Nov 2026 02:00 EST

Contacts

No contacts researched for Shelter Island yet. The rescue centre and VHF 16 below always apply.

Emergency

Nearest rescue centre...

VHF 16distress, safety and calling (156.800 MHz)DSC 70digital selective calling

Active warnings near Shelter Island

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Catalogue harbor data

LOCODE function: 1-3--6--
Raw coordinates: 4104N 07220W

Warnings mentioning this port

Active and archived NAVAREA / coastal messages that reference Shelter Island in their text.

LNM01-FD9A9B - GARDINERS BAY SOUTH ENTRANCE - SHELTER ISLAND SOUND SOUTH CHANNEL
CoastalUS Coast Guard LNM
GARDINERS BAY SOUTH ENTRANCE - SHELTER ISLAND SOUND SOUTH CHANNEL ATON / ATON Changes Location: 41-02.19N 072-15.55W Aid Name: Montauk Oyster Site T19 Aquaculture Lighted Buoy NW LLNR: 28247 Action: ESTABLISH WITH Fl Y 4s. Valid 2026-10-22 to 2026-12-21. USCG Northeast District L
LNM01-6849DC - GARDINERS BAY SOUTH ENTRANCE - SHELTER ISLAND SOUND SOUTH CHANNEL
CoastalUS Coast Guard LNM
GARDINERS BAY SOUTH ENTRANCE - SHELTER ISLAND SOUND SOUTH CHANNEL ATON / ATON Changes Location: 41-02.07N 072-15.41W Aid Name: Montauk Oyster Site T19 Aquaculture Lighted Buoy SE LLNR: 28247.2 Action: ESTABLISH WITH Fl Y 4s. Valid 2026-10-22 to 2026-12-21. USCG Northeast District
LNM01-1E3AE3 - GARDINERS BAY SOUTH ENTRANCE - SHELTER ISLAND SOUND SOUTH CHANNEL
CoastalUS Coast Guard LNM
GARDINERS BAY SOUTH ENTRANCE - SHELTER ISLAND SOUND SOUTH CHANNEL ATON / ATON Changes Location: 41-01.95N 072-15.21W Aid Name: Montauk Oyster Site T22 Aquaculture Lighted Buoy SE LLNR: 28247.6 Action: ESTABLISH WITH Fl Y 4s. Valid 2026-10-22 to 2026-12-21. USCG Northeast District
LNM01-B64383 - GARDINERS BAY SOUTH ENTRANCE - SHELTER ISLAND SOUND SOUTH CHANNEL
CoastalUS Coast Guard LNM
GARDINERS BAY SOUTH ENTRANCE - SHELTER ISLAND SOUND SOUTH CHANNEL ATON / ATON Changes Location: 41-02.06N 072-15.35W Aid Name: Montauk Oyster Site T22 Aquaculture Lighted Buoy NW LLNR: 28247.4 Action: ESTABLISH WITH Fl Y 4s. Valid 2026-10-22 to 2026-12-21. USCG Northeast District
LNM01-71FAB1 - GARDINERS BAY SOUTH ENTRANCE - SHELTER ISLAND SOUND SOUTH CHANNEL
CoastalUS Coast Guard LNM
GARDINERS BAY SOUTH ENTRANCE - SHELTER ISLAND SOUND SOUTH CHANNEL ATON / ATON Changes Location: 41-02.05N 072-15.21W Aid Name: Montauk Oyster Site T22 Aquaculture Lighted Buoy NE LLNR: 28247.5 Action: ESTABLISH WITH Fl Y 4s. Valid 2026-10-22 to 2026-12-21. USCG Northeast District
LNM01-F62215 - GARDINERS BAY SOUTH ENTRANCE - SHELTER ISLAND SOUND SOUTH CHANNEL
CoastalUS Coast Guard LNM
GARDINERS BAY SOUTH ENTRANCE - SHELTER ISLAND SOUND SOUTH CHANNEL ATON / ATON Changes Location: 41-01.95N 072-15.36W Aid Name: Montauk Oyster Site T22 Aquaculture Lighted Buoy SW LLNR: 28247.7 Action: ESTABLISH WITH Fl Y 4s. Valid 2026-10-22 to 2026-12-21. USCG Northeast District
LNM01-EF48CF - GARDINERS BAY SOUTH ENTRANCE - SHELTER ISLAND SOUND SOUTH CHANNEL
CoastalUS Coast Guard LNM
GARDINERS BAY SOUTH ENTRANCE - SHELTER ISLAND SOUND SOUTH CHANNEL ATON / ATON Changes Location: 41-02.18N 072-15.41W Aid Name: Montauk Oyster Site T19 Aquaculture Lighted Buoy NE LLNR: 28247.1 Action: ESTABLISH WITH Fl Y 4s. Valid 2026-10-22 to 2026-12-21. USCG Northeast District
LNM01-774E92 - GARDINERS BAY SOUTH ENTRANCE - SHELTER ISLAND SOUND SOUTH CHANNEL
CoastalUS Coast Guard LNM
GARDINERS BAY SOUTH ENTRANCE - SHELTER ISLAND SOUND SOUTH CHANNEL ATON / ATON Changes Location: 41-02.08N 072-15.56W Aid Name: Montauk Oyster Site T19 Aquaculture Lighted Buoy SW LLNR: 28247.3 Action: ESTABLISH WITH Fl Y 4s. Valid 2026-10-22 to 2026-12-21. USCG Northeast District
LNM11-DISCREPANCIES - AIDS TO NAVIGATION DISCREPANCIES
CoastalUS Coast Guard LNM
AIDS TO NAVIGATION DISCREPANCIES 155 aids reported with a discrepancy. NAME | LLNR | STATUS | AID TYPE Shelter Island East Shoal Light | 1654 | LT IMCH | PA Americas Cup Harbor Daybeacon 4 | 1670 | LT IMCH | PA Berkeley Marina Channel Light 2 | 5430 | LT EXT | FD Berkeley Reef Li
LNM01-DISCREPANCIES - AIDS TO NAVIGATION DISCREPANCIES
CoastalUS Coast Guard LNM
AIDS TO NAVIGATION DISCREPANCIES 330 aids reported with a discrepancy. NAME | LLNR | STATUS | AID TYPE Ambrose Channel Lighted Buoy 12 | 34850 | LT EXT | FD Ambrose Channel Lighted Gong Buoy 17 | 34880 | LT EXT | FD Annisquam River Channel Buoy 6 | 9620 | WATCHING PROPERLY | FD A
LNM01-743B8E - GARDINERS BAY SOUTH ENTRANCE - SHELTER ISLAND SOUND SOUTH CHANNEL
CoastalUS Coast Guard LNM
GARDINERS BAY SOUTH ENTRANCE - SHELTER ISLAND SOUND SOUTH CHANNEL General / Hazards To Navigation / Obstructions Location: 40-53.52N 072-17.18W Sound and the Sea, LLC will conduct scientific research focused on marine mammal detection and monitoring in the Atlantic Ocean south of
LNM01-C46C27 - SHELTER ISLAND SOUND SOUTH CHANNEL - LITTLE PECONIC BAY
CoastalUS Coast Guard LNM
SHELTER ISLAND SOUND SOUTH CHANNEL - LITTLE PECONIC BAY General / Hazards To Navigation / Shoaling Reported NY-LONG ISLAND SOUND (Eastern Part) (Chart 12354)-SOUTH SIDE-MATTITUCK INLET Shoaling has been reported in the Mattituck Inlet. Mariners are advised to proceed with caution
LNM01-1D5BE8 - GARDINERS BAY SOUTH ENTRANCE - SHELTER ISLAND SOUND SOUTH CHANNEL
CoastalUS Coast Guard LNM· Archived
GARDINERS BAY SOUTH ENTRANCE - SHELTER ISLAND SOUND SOUTH CHANNEL ATON / ATON Changes Location: 41-02.08N 072-15.15W Aid Name: Olas Oysters Lighted Aquaculture Buoy NW LLNR: 28246 Action: ESTABLISH WITH Fl Y 2s. Valid 2026-10-05 to 2026-12-04. USCG Northeast District Local Notice
LNM01-31B202 - GARDINERS BAY SOUTH ENTRANCE - SHELTER ISLAND SOUND SOUTH CHANNEL
CoastalUS Coast Guard LNM· Archived
GARDINERS BAY SOUTH ENTRANCE - SHELTER ISLAND SOUND SOUTH CHANNEL ATON / ATON Changes Location: 41-01.97N 072-15.01W Aid Name: Olas Oysters Lighted Aquaculture Buoy SE LLNR: 28246.2 Action: ESTABLISH WITH Fl Y 2s. Valid 2026-10-05 to 2026-12-04. USCG Northeast District Local Noti
LNM01-B0481F - GARDINERS BAY SOUTH ENTRANCE - SHELTER ISLAND SOUND SOUTH CHANNEL
CoastalUS Coast Guard LNM· Archived
GARDINERS BAY SOUTH ENTRANCE - SHELTER ISLAND SOUND SOUTH CHANNEL ATON / ATON Changes Location: 41-01.97N 072-15.15W Aid Name: Olas Oysters Lighted Aquaculture Buoy SW LLNR: 28246.3 Action: ESTABLISH WITH Fl Y 2s. Valid 2026-10-05 to 2026-12-04. USCG Northeast District Local Noti
LNM01-F7A6F4 - GARDINERS BAY SOUTH ENTRANCE - SHELTER ISLAND SOUND SOUTH CHANNEL
CoastalUS Coast Guard LNM· Archived
GARDINERS BAY SOUTH ENTRANCE - SHELTER ISLAND SOUND SOUTH CHANNEL ATON / ATON Changes Location: 41-02.08N 072-15.01W Aid Name: Olas Oysters Lighted Aquaculture Buoy NE LLNR: 28246.1 Action: ESTABLISH WITH Fl Y 2s. Valid 2026-10-05 to 2026-12-04. USCG Northeast District Local Noti