JOHN T. ESSBERGER
Oil tanker · Portugal · AIS Class A
In short
JOHN T. ESSBERGER (Oil tanker, Portugal flag) was last seen on AIS on , moored, in the port of Zaandam. Its crew-entered AIS destination is NLAMS (Amsterdam); its reported draught is 5.7 m (voyage report via AISstream.io global terrestrial AIS, received Oct 6, 2026, 16:05 UTC). It arrived there on Oct 6, 2026, 04:04 UTC. ISM manager: John T. Essberger GmbH & CO. KG (source: EU MRV (THETIS-MRV) emissions, reporting years 2024–2025).
- Vessel type
- Oil tanker
- Flag
- Portugal
- Year built
- —
- Gross tonnage
- —
- Size (length × beam)
- —
- ISM manager
- John T. Essberger GmbH & CO. KG
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Last reported position
received- Position
- 52.4125° N, 4.8394° E
- Area
- North Sea
- StatusWhat do AIS statuses mean?
- Moored
- Speed
- 0 kn
- Course
- 41°
- Heading
- 35°
Last 30 days: 5 port calls (Zaandam, IJmuiden/Velsen, la Pallice, Berendrecht, and Kallo).
Port calls are detected by Voydar from AIS (at least 30 minutes slow inside a harbour area); see Port calls below.
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Try the live demo, no sign-upIdentity & particulars
- Name
- JOHN T. ESSBERGER
- IMO numberWhat is an IMO number?
- 9939797
- MMSIWhat is an MMSI?
- 255891000
- Call signWhat is a call sign?
- CQWX
- Flag
- Portugal
- AIS ship type
- Tanker
- Gross tonnageGross tonnage vs deadweight
- —
- Length overall
- —
- Beam
- —
- Year built
- —
PortugalA tag next to a value names the register that supplied it (hover or tap it for the record and date). Values without a tag come from the ship's own AIS broadcasts or from Wikidata. Position and identity are derived live from AIS.
Ownership & management
Each line shows where the fact comes from. Links backed by an identifier point to the company page.
- ISM manager
- Source: EU MRV (THETIS-MRV) emissions · reporting years 2024–2025 · reported · confidence 0.9 · retrieved Oct 5, 2026
Timeline
Dated events for this ship from every source Voydar holds, newest first. Each line names its source; derived items say how they were derived.
| Date | Event | Source |
|---|---|---|
| Arrived at ZaandamAIS-detected | Voydar port-call detector (AIS geofence) | |
| Left IJmuiden/VelsenAIS-detected | Voydar port-call detector (AIS geofence) | |
| Arrived at IJmuiden/VelsenAIS-detected | Voydar port-call detector (AIS geofence) | |
| Left la PalliceAIS-detected | Voydar port-call detector (AIS geofence) | |
| Arrived at la PalliceAIS-detected | Voydar port-call detector (AIS geofence) |
Owner, operator and manager changes found by comparing yearly EU MRV reports are dated to the reporting year ("during 2025"), not to a day. Port calls here are the most recent only; the full lists are further down.
Emissions & fuel consumption
Independently verified annual figures reported under the EU MRV regulation — public environmental data the incumbents don't surface.
| Year | CO₂ emitted | Fuel burned | Time at sea | CO₂ / n mile |
|---|---|---|---|---|
| 2023 | 983 t | 318 t | 43 days | 117 kg |
| 2024 | 6,274 t | 2,163 t | 183 days | 135 kg |
| 2025 | 5,837 t | 1,969 t | 173 days | 137 kg |
Technical efficiency: EEDI (9.64 gCO₂/t·nm). Source: European Commission / EMSA THETIS-MRV (EU Regulation 2015/757). Covers voyages to, from and within the EU/EEA.
Port calls
Two kinds of evidence, kept apart: calls Voydar detected from the ship's AIS positions, and arrivals and departures published by port authorities and customs records.
Detected from AIS AIS-detected
| Port | Arrived | Departed | Time in port |
|---|---|---|---|
| Zaandam NLZAA | Oct 6, 2026, 04:04 UTC | in port | — |
| IJmuiden/Velsen NLIJM | Oct 6, 2026, 00:58 UTC | Oct 6, 2026, 02:57 UTC | 1 h 59 min |
| la Pallice FRLPE | Oct 2, 2026, 07:44 UTC | Oct 2, 2026, 23:52 UTC | 16 h 8 min |
| Berendrecht BEBRT | Sep 25, 2026, 15:42 UTC | Sep 26, 2026, 17:12 UTC | 25 h 30 min |
| Kallo BEKOU | Sep 23, 2026, 23:02 UTC | Sep 25, 2026, 15:35 UTC | 40 h 34 min |
| Lillo BELIL | Jul 24, 2026, 10:16 UTC | Jul 25, 2026, 09:33 UTC | 23 h 17 min |
| IJmuiden/Velsen NLIJM | Jun 15, 2026, 00:55 UTC | Jun 15, 2026, 01:33 UTC | 37 min |
Detected by Voydar when the ship's AIS positions stayed slow inside a harbour area. Calls shorter than 30 minutes are not shown. Depends on AIS reception; detection started on June 8, 2026.
Behaviour at sea Voydar-derived
Patterns Voydar derived from this ship's AIS broadcasts. They are inferences, not reports: each one shows how it was computed and how confident we are, and none of them says why a ship behaved this way.
Predicted arrival
Voydar estimates arrival at Amsterdam around Oct 7, 2026, 06:33 UTC, most likely between Oct 6, 2026, 04:20 UTC and Oct 22, 2026, 01:13 UTC. Based on 82 past transits between NLIJM and Amsterdam seen in our port calls. The crew-reported ETA is Oct 5, 2026, 11:00 UTC.
Medium (57%) · Method seadar.behaviour.eta_prediction v1
| When | What we observed | Confidence |
|---|---|---|
| Sep 26, 2026, 04:42 UTC | Draught change Reported draught went from 5.8 m to 6.8 m while in port at Berendrecht. Voydar infers the ship probably loaded cargo. Method seadar.behaviour.draught_change v1 | Medium (65%) |
Source: AISstream.io global terrestrial AIS. AIS data: AISstream.io. Licence: none published.
Derived from AIS positions of feeds whose terms allow display on Voydar. Coverage is terrestrial: gaps are reported only where our receivers kept hearing other ships. Detections below medium confidence are not shown.
Frequently asked questions
- Where is JOHN T. ESSBERGER now?
- JOHN T. ESSBERGER (Oil tanker, Portugal flag) was last seen on AIS on Oct 6, 2026, 16:20 UTC, moored, in the port of Zaandam. The crew-entered destination was NLAMS (voyage report via AISstream.io global terrestrial AIS, received Oct 6, 2026, 16:05 UTC). This report does not confirm the ship’s current route.
- What kind of ship is JOHN T. ESSBERGER?
- JOHN T. ESSBERGER is an oil tanker sailing under the flag of Portugal.
- Who is recorded as the owner or manager of JOHN T. ESSBERGER?
- John T. Essberger GmbH & CO. KG is recorded as ISM manager for JOHN T. ESSBERGER (source: EU MRV (THETIS-MRV) emissions; reporting years 2024–2025). This source record does not independently confirm today’s ownership or management.
- What sanctions and inspection records does Voydar hold for JOHN T. ESSBERGER?
- Voydar has no matched sanctions record displayed for JOHN T. ESSBERGER from the OFAC SDN list, the UK Sanctions List, the Canadian autonomous sanctions list, the EU list of designated vessels, the New Zealand Russia Sanctions Register and the French national asset-freeze register. Coverage may be incomplete; this is not sanctions clearance. No matched inspection records are displayed for JOHN T. ESSBERGER. Missing records do not establish whether the ship has been detained.
Neighbouring IMO numbers
IMO numbers are issued in sequence. These are the nearest numbers below and above this ship's that have a full Voydar profile.
Use this data
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