MMSI 431009557 · Call sign JD4179
Not yet on Master's MateNO.18 SUMIWAKAMARU is a cargo ship under the Japanese flag, 82 metres in length. She carries 14 metres in the beam and a 5.6 m draft. Officially she's MMSI 431009557, call sign JD4179, IMO 9822401. NO.18 SUMIWAKAMARU is welcome on the Master's Mate Safety Initiative Network — free situational awareness and a watch network shared by vessels of every size.
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
Joining the Safety Initiative Network doesn't just put NO.18 SUMIWAKAMARU on the map. It hands you the full bridge:
© 2026 Master’s Mate. All rights reserved.