Master's MateSafety Initiative Network
The Master's Mate Safety Initiative Network (MMSIn) — like AAA for the ocean, but free & community-driven. Cruisers keeping each other safe: anchor-drag & distress alerts, a verified captains directory, and a watch network that has your back.
Cargo
GRAND SAPPHIRE
MMSI 372516000 · Call sign 3EJH
Not yet on Master's MateType
Cargo
Flag
PANLength
200 m
Beam
32 m
Draft
8 m
Call sign
3EJH
IMO
9325233
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
50
GRAND SAPPHIRE, a Panamanian merchant vessel, measures 200 metres on deck. She carries a beam measuring 32 metres and a 8 m draft. She broadcasts as MMSI 372516000, call sign 3EJH, IMO 9325233. Give GRAND SAPPHIRE the backing of the Master's Mate Safety Initiative Network — free, and a fleet that has her back.
Free forever · No credit card · for commercial operators
Eyes on GRAND SAPPHIRE, around the clock.
Real-time AIS, full systems telemetry, distress alerting and worldwide charts — your hull on one dashboard, from anywhere.
Put her on the dashboard — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Last known position · Jun 3, 2026
Position
37.0240° N, 76.0534° W
Transiting Chesapeake Bay? You're never out there alone.
Thousands of cruisers on the Master's Mate Network — ready to help the moment something goes wrong.
Free with your claim · for commercial operators
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put GRAND SAPPHIRE on the map. It hands you the full bridge:
Live AIS & Traffic
See every vessel around you in real time. Closest-approach warnings before they matter.
Systems Monitoring
Batteries, bilge, tanks, Victron & NMEA 2000 telemetry — your whole boat on one dashboard.
Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
Worldwide Charts
Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.
Weather & Routing
GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.
Anchor Watch
GPS-precise drag alarms that actually wake you — and your whole crew. Sleep through the night.
Onboard Cameras
Watch your boat from anywhere — live feeds and 24h recording, straight from your gateway.
Hail Any Captain
A verified captains directory + direct hailing. Reach the boat next to you, or across the bay.
Claim GRAND SAPPHIRE and switch it all on
Free to join · nothing to install to start · cancel anytime
About GRAND SAPPHIRE
What kind of vessel is GRAND SAPPHIRE?
GRAND SAPPHIRE is a Cargo flagged to Panama.
Where was GRAND SAPPHIRE last seen?
GRAND SAPPHIRE was last reported in Chesapeake Bay in Jun 2026 on public AIS.
What is GRAND SAPPHIRE's MMSI?
GRAND SAPPHIRE's MMSI is 372516000. Call sign 3EJH. IMO 9325233.
How big is GRAND SAPPHIRE?
GRAND SAPPHIRE is about 200 m long, 32 m on the beam, drawing 8 m.
Is GRAND SAPPHIRE on the Master's Mate Safety Initiative Network?
Not yet. If GRAND SAPPHIRE is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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