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Indonesia flag

MASADA 21 — Tug · MMSI 525300081

IDClass B
World map showing the last known position of MASADA 21 at 1° 21.749' N, 125° 16.295' E
NSEW
Current PositionNo recent signal

MASADA 21 has not broadcast an AIS position for 30 days. Its most recent report placed it in the North Pacific Ocean, at 1.3625° N, 125.2716° E, on 10 Aug 2026, 03:08 UTC. It was sailing from TANJUNG MERPATI to CLASS B.

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Updated 29 days ago using terrestrial data
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Class B
Current Navigational Status
5.3 kn
Speed
29.0°
/ 511°
Course / Heading
---
Static Draught
---
Current Draught

Voyage Tracker

ATD
12:12 UTCAug 6, 2026
CLASS B
ETA
21:44 UTCAug 2, 2026
MASADA 21

MASADA 21

Identity

Tug
Type
Indonesia flagID
Flag
N/A
IMO Number
525300081
MMSI
YDC4065
Call Sign

Specifications

N/A
Length × Breadth
N/A
Year Built
N/A
Deadweight
N/A
Gross Tonnage
N/A
Engine Power
N/A
Builder
N/A
Class Society
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Real-time AIS positions, voyage history, and arrival alerts for MASADA 21 — straight from your phone.

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Dive into the fleet, port, and flag state that MASADA 21 is part of.

Flag State
All ID-flagged vessels
Browse every ship currently registered under the ID flag, with live AIS positions.
Vessel Type
Browse all Tugs
See the global fleet of tugs tracked on MarineRadar with live AIS data.
Departure Port
Port of TANJUNG MERPATI
Port traffic, arrivals and live vessel positions for TANJUNG MERPATI (IDBYH).

About MASADA 21

Identity · Ownership · Class · Route

MASADA 21 — Tug

MASADA 21 is a tug registered under the Indonesia flag.

MASADA 21 route and voyage history

MASADA 21 most recently departed TANJUNG MERPATI. The live route and current course of MASADA 21 are shown on the bridge map above, updated whenever the vessel is in range of a coastal AIS receiver or a satellite pass.

Vessel class and identifiers

Vessels in the same class as MASADA 21 can be seen in the Similar Vessels section above or in the full tug fleet at /vessel-type/tug-pilot-vessel.

  • MMSI: 525300081
  • Call sign: YDC4065
  • Vessel type: Tug
  • Flag state: Indonesia

Frequently Asked Questions

Where is MASADA 21 right now?+
MASADA 21 has not broadcast an AIS position for 30 days. The most recent broadcast placed it in the North Pacific Ocean, on 10 Aug 2026, 03:08 UTC. It was sailing from TANJUNG MERPATI to CLASS B. Vessels stop appearing on terrestrial AIS when they move beyond receiver range, so a gap does not necessarily mean the vessel is inactive.
What are the identifiers for MASADA 21?+
MASADA 21 broadcasts MMSI 525300081, with call sign YDC4065. The MMSI is the radio identifier used by AIS; the IMO number stays with the ship for life and does not change with re-flagging or sale.
What type of ship is MASADA 21?+
MASADA 21 is classified as a tug vessel registered under the ID flag. The vessel-type classification is derived from the AIS Type field broadcast by the ship's transponder; full tug fleet at /vessel-type/tug-pilot-vessel and full ID flag list at /flag/id.
How can I see the live position of MASADA 21?+
MarineRadar shows the latest AIS broadcast from MASADA 21 above, with current position, course, speed, and navigation status. Tap "View on map" to centre the live tracker on the vessel and watch its movement update in real time. The same data is available offline-friendly in the iOS and Android apps.
How often is MASADA 21's position updated?+
AIS transponders broadcast position every 2 seconds when underway at high speed and up to every 3 minutes at anchor. The position you see refreshes whenever the ship is in range of a coastal AIS receiver or a satellite pass — typically seconds in coastal waters and minutes offshore.
What class is MASADA 21?+
As a tug, MASADA 21 sits in the same design class as the other tugs listed in the Similar Vessels section of the vessel page, or in the full tug directory at /vessel-type/tug-pilot-vessel.

MASADA 21 — Key Facts

MMSI
525300081
Call sign
YDC4065
Vessel type
Tug
Flag state
ID
Navigation status
Class B
Current speed
5.3 knots
Course over ground
29.0°
Heading
511°
Last known position
1.3625°, 125.2716°
Destination
CLASS B
ETA
2026-08-02T21:44:00Z
Departure port
TANJUNG MERPATI
Actual time of departure
2026-08-06T12:12:00Z
AIS last updated
2026-08-10T03:08:09Z