TS State of Maine — Two-Way AIS Message Exchange

Summary

Over the weekend of America's 250th anniversary, MotionInfo's StationKeeper network transmitted an AIS safety message from Navesink (Twin Lights) Lighthouse in Highlands, NJ that was received aboard the Maine Maritime Academy training ship TS/MV State of Maine (MMSI 338924010) while in New York Harbor — and the vessel's acknowledgement was received back at the shore station, completing a full shore-to-ship and ship-to-shore round trip.

Cadets aboard the ship photographed the messages as they arrived on the vessel's own Furuno Class-A AIS unit, providing independent, on-vessel confirmation of end-to-end delivery. This documents the same StationKeeper messaging capability tested with UNH research vessels, here demonstrated as a complete two-way exchange on a large training ship in a major harbor.

2-way

Shore→ship and ship→shore round trip confirmed

338924010

TS State of Maine — receiving vessel MMSI

Furuno

Class-A AIS unit that displayed the messages

Jul 3–4, 2026

New York Harbor

The Two-Way Exchange

StationKeeper shore aids-to-navigation transmitted addressed AIS text messages to the TS State of Maine while the ship was in New York Harbor. The messages appeared on the ship's Furuno Class-A AIS display as addressed inbox messages, and the vessel's acknowledgement was received back at the shore station — a complete shore-to-ship and ship-to-shore round trip.

Two addressed messages were captured on the vessel's AIS unit:

FROM MMSI 993666072 · Navesink (Twin Lights) Lighthouse, Highlands NJ · 03 JUL 23:50 UTC · addressed to 338924010
"AIS MESSAGE TO STATE OF MAINE — HELLO!"

FROM MMSI 993660511 · 03 JUL 00:05 UTC · addressed to 338924010
"MONTAUK LIGHTHOUSE RADIO CHECK. PLS ACK."

"I am the Cadet Public Relations Officer onboard M/V State of Maine … I took a few photos while in NY and some video … I have attached what I have."

— 2/C Leland Seggerman, Cadet Public Relations Officer, TS State of Maine (Maine Maritime Academy), July 4, 2026

Result

Vessel	AIS equipment	Message received	Acknowledgement
TS/MV State of Maine MMSI 338924010	Furuno Class-A AIS transponder	Confirmed on-vessel	Round trip confirmed

Media — Messages Received Aboard the Ship

Captured aboard TS State of Maine by 2/C Leland Seggerman (Cadet PRO), New York Harbor, July 3–4, 2026, on the vessel's own Furuno Class-A AIS unit. Click any image to enlarge.

Furuno AIS inbox message: AIS MESSAGE TO STATE OF MAINE HELLO

Message received — "HELLO!"The ship's Furuno Class-A AIS inbox showing the addressed message "AIS MESSAGE TO STATE OF MAINE — HELLO!" transmitted from Navesink (Twin Lights) Lighthouse, Highlands NJ (MMSI 993666072) to the State of Maine (own MMSI 338924010), 03 JUL 23:50 UTC.

Furuno AIS inbox message: MONTAUK LIGHTHOUSE RADIO CHECK PLS ACK

Message received — "RADIO CHECK. PLS ACK."The Furuno AIS inbox showing "MONTAUK LIGHTHOUSE RADIO CHECK. PLS ACK." from MMSI 993660511, 03 JUL 00:05 UTC — the shore station requesting an acknowledgement that the ship then returned.

Cadet at the ship's radio console operating the Furuno AIS unit

Aboard the shipCadet 2/C Leland Seggerman at the bridge radio console operating the Furuno Class-A AIS unit aboard the TS State of Maine, New York Harbor.

End-to-end confirmation. The addressed messages rendered natively on the ship's Furuno Class-A AIS unit and the vessel's acknowledgement was received back at the shore station — a complete shore-to-ship and ship-to-shore round trip, documented independently by the ship's own crew.

How It Happened — Timeline

Jul 3, 2026
Navesink (Twin Lights) Lighthouse, Highlands NJ → TS State of Maine (New York Harbor)
Navesink Lighthouse (MMSI 993666072) transmitted the addressed AIS message "AIS MESSAGE TO STATE OF MAINE — HELLO!" to the ship's Class-A AIS (MMSI 338924010); it was received and displayed on the vessel's Furuno unit, and the vessel's acknowledgement was received back at the shore station — a complete round trip. A "MONTAUK LIGHTHOUSE RADIO CHECK. PLS ACK." message (MMSI 993660511) was also captured on the ship's AIS.
Jul 4, 2026
2/C Leland Seggerman (Cadet PRO) → MotionInfo (Portia Calouro)
The ship's Cadet Public Relations Officer sends the photos and video captured of the messages on the AIS unit while the ship was in New York, cc'ing Capt. Patrick Griffin.
Underway to Boston
TS State of Maine crew
Crew agrees to keep a lookout for further messages as the ship continues its transit toward Boston.

Vessel & Participants

TS/MV State of Maine	Maine Maritime Academy training ship — MMSI 338924010; Furuno Class-A AIS; receiving vessel in New York Harbor
2/C Leland Seggerman	Cadet Public Relations Officer, TS State of Maine — captured the photos/video of the received messages
Capt. Patrick Griffin	Maine Maritime Academy — coordinated the vessel-side documentation
Portia Calouro	Maritime Information Systems, Inc. / MotionInfo — program coordination
Moses Calouro	Maritime Information Systems, Inc. / MotionInfo — transmitted the shore-side messages

References

Companion report — UNH Research Vessel AIS Message Testing →
NOAA Fisheries — Messaging Mariners in Real Time to Reduce North Atlantic Right Whale Vessel Strikes →
MotionInfo — StationKeeper program →