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Triton Lighthouse

Fl G 30s🇺🇸Maryland, USInactive

The Triton Light, first lit in 1959, is a navigational beacon situated on the seawall of the United States Naval Academy in Annapolis, Maryland. It marks the convergence of the Severn River, Spa Creek, and the Annapolis harbor. The light emits a flashing green signal, with a unique sequence of four flashes followed by five flashes, repeated every 30 seconds. This distinctive pattern was established to honor the Naval Academy Class of 1945. The lighthouse stands approximately 7.5 meters above the water.

Why it matters: This light serves as a trusted navigational point within Annapolis Harbor. The section of the seawall near the Triton Light is utilized for calibrating boat speed instruments.

Background
The Triton Light is a navigational beacon on the seawall of the United States Naval Academy in Annapolis, Maryland, where the Severn River meets Spa Creek and the Annapolis harbor. It was donated to the Academy and named for the Greek god by the Class of 1945. It is not only an important part of the culture and traditions of the Naval Academy, but also is a trusted navigational point in Annapolis Harbor (e.g., 33 CFR 110.159). About a year after the light was installed, USS Triton (SSRN-586) completed her historic submerged circumnavigation. Considering the coincidence of names, the crew of Triton provided samples of water from the 22 seas through which their boat had passed, which were used to fill a globe built into the light. The characteristics of this light are FL (4+5) G 30s, that is Flashing Green light 4x, then 5x, every 30 seconds. The characteristics of the odd number sequence is unique, an honor to commemorate the Class of 1945. The seawall on the Severn River from Triton Light north-west to the end of Simms Rd at College Creek is exactly 1/2 nautical mile, thus it is frequently used to calibrate speed instruments on boats.
Characteristic Signature
Fl G 30s
Flash Type
Flashing
Light Color
Green
Flash Count
1 flash
Interval
30s
Focal Height
7.5m
City
Maryland
Country
🇺🇸US
Latitude
38.9814°
Longitude
-76.4763°
Flag
Type
Name
Dist.
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How do mariners identify Triton Lighthouse at night?+
Triton displays the characteristic Fl G 30s — 1 green flash every 30 seconds. Each lighthouse has a unique flash pattern published in the List of Lights, allowing mariners to positively identify it and distinguish it from other navigation aids in the area. The green color may indicate a specific sector or warning zone.
Which ports and harbors does Triton Lighthouse guide vessels into?+
Triton Lighthouse assists vessels approaching 5 nearby ports. The closest is Annapolis at 0.6 NM to the SW. Other ports served include GINGERVILLE CREEK (3.9 NM WSW), SOUTH RIVER (5.1 NM SSW), EDGEWATER (6 NM SSW), BAY BRIDGE (6.7 NM E). Mariners should consult the relevant chart for full approach and pilotage information.
Is Triton Lighthouse still active and maintained?+
Triton Lighthouse is currently listed as inactive. It may have been decommissioned, replaced by a different navigation aid, or temporarily taken out of service. Mariners should check the latest Notices to Mariners for current status.
What shipping routes pass near Triton Lighthouse?+
Triton Lighthouse is located within the US East Coast shipping lane — a major shipping corridor serving ports along the Atlantic seaboard of the United States. This makes it an important navigation reference for commercial shipping traffic in the region.
How can I track vessels near Triton Lighthouse?+
You can track vessels near Triton Lighthouse in real time using MarineRadar. The platform shows live AIS positions of ships in the area, including vessel name, type, flag, speed, and course. Use the "Track Vessels Nearby" button on this page to open the live map centered on this lighthouse.