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
MV JOHANNAH 16
MMSI 668116268 · Call sign S9Z15
Not yet on Master's MateType
Cargo
Flag
STPLength
97 m
Beam
20 m
Draft
4 m
Call sign
S9Z15
IMO
1137551
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
84
MV JOHANNAH 16 is a general cargo ship on the São Tomé and Principe registry, spanning 97 metres. She has a 20-metre beam and a draft measuring 4 metres. Her registration reads MMSI 668116268, call sign S9Z15, IMO 1137551. Claim MV JOHANNAH 16 free on the Master's Mate Safety Initiative Network and let nearby cruisers have her back.
Free forever · No credit card · for commercial operators
Eyes on MV JOHANNAH 16, 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 4, 2026
Position
10.3472° N, 123.9933° E
Wherever MV JOHANNAH 16 roams, 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 MV JOHANNAH 16 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 MV JOHANNAH 16 and switch it all on
Free to join · nothing to install to start · cancel anytime
About MV JOHANNAH 16
What kind of vessel is MV JOHANNAH 16?
MV JOHANNAH 16 is a Cargo flagged to São Tomé and Principe.
Where was MV JOHANNAH 16 last seen?
MV JOHANNAH 16 was last reported in around 10°N 124°E in Jun 2026 on public AIS.
What is MV JOHANNAH 16's MMSI?
MV JOHANNAH 16's MMSI is 668116268. Call sign S9Z15. IMO 1137551.
How big is MV JOHANNAH 16?
MV JOHANNAH 16 is about 97 m long, 20 m on the beam, drawing 4 m.
Is MV JOHANNAH 16 on the Master's Mate Safety Initiative Network?
Not yet. If MV JOHANNAH 16 is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
© 2026 Master’s Mate. All rights reserved.