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Netherlands flag

SB 21 — Other · MMSI 244860383

NLMoored
World map showing the last known position of SB 21 at 52° 22.983' N, 4° 51.507' E
NSEW
Current PositionNo recent signal

SB 21 has not broadcast an AIS position for 51 days. Its most recent report placed it in the North Sea, at 52.3830° N, 4.8585° E, on 19 Jul 2026, 05:11 UTC. It was sailing from WEESP to AMSTERDAM.

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Updated 51 days ago using terrestrial data
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Moored
Current Navigational Status
0.0 kn
Speed
0.0°
/ 511°
Course / Heading
1.5 m
Static Draught
1.5 m
Current Draught

Voyage Tracker

Netherlands flag
WEESPNLWSP
ATD
11:39 UTCApr 8, 2026
ETA
12:16 UTCApr 8, 2026
SB 21

SB 21

Identity

Other
Type
Netherlands flagNL
Flag
N/A
IMO Number
244860383
MMSI
PI3074
Call Sign

Specifications

16 m × 4 m
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 SB 21 — straight from your phone.

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

Flag State
All NL-flagged vessels
Browse every ship currently registered under the NL flag, with live AIS positions.
Departure Port
Port of WEESP
Port traffic, arrivals and live vessel positions for WEESP (NLWSP).
Destination Port
Port of AMSTERDAM
Arrivals, berth specifications, and live vessel traffic for AMSTERDAM (NLAMS).

About SB 21

Identity · Ownership · Class · Route

SB 21 — Vessel

SB 21 is a maritime vessel registered under the Netherlands flag.

SB 21 route and voyage history

SB 21 is currently on a voyage from WEESP to AMSTERDAM with an estimated arrival on 2026-04-08T12:16:00Z. The live route and current course of SB 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 SB 21 can be seen in the Similar Vessels section above.

  • MMSI: 244860383
  • Call sign: PI3074
  • Flag state: Netherlands

Frequently Asked Questions

Where is SB 21 right now?+
SB 21 has not broadcast an AIS position for 51 days. The most recent broadcast placed it in the North Sea, on 19 Jul 2026, 05:11 UTC. It was sailing from WEESP to AMSTERDAM. 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 SB 21?+
SB 21 broadcasts MMSI 244860383, with call sign PI3074. 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 SB 21?+
SB 21 is a maritime vessel registered under the NL flag. The vessel-type classification is derived from the AIS Type field broadcast by the ship's transponder and full NL flag list at /flag/nl.
How can I see the live position of SB 21?+
MarineRadar shows the latest AIS broadcast from SB 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 SB 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 SB 21?+
The vessel's design class is inferred from its dimensions, gross tonnage and dead weight, all of which are listed in the Identity and Specifications panels on the vessel page.

SB 21 — Key Facts

MMSI
244860383
Call sign
PI3074
Vessel type
Unknown
Flag state
NL
Navigation status
Moored
Current speed
0.0 knots
Course over ground
0.0°
Heading
511°
Last known position
52.3830°, 4.8585°
Destination
AMSTERDAM
ETA
2026-04-08T12:16:00Z
Departure port
WEESP
Actual time of departure
2026-04-08T11:39:00Z
Current draught
1.5 m
Maximum static draught
1.5 m
AIS last updated
2026-07-19T05:11:13Z