IMPROMPTU — Pleasure Craft · IMO 9599640

IMPROMPTU is currently moored in the Gulf of Mexico, within the US East Coast shipping lane. It is sailing from SAN JUAN to FORT LAUDERDALE with an ETA of 29 Oct 2026, 15:15 UTC. Its exact coordinates, speed and ETA are shown at the top of this page and refresh from the latest AIS broadcast.

IMPROMPTU broadcasts MMSI 319769000 and is registered as IMO 9599640, with call sign ZGBJ3. 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.

IMPROMPTU is classified as a pleasure craft vessel registered under the KY flag. The vessel-type classification is derived from the AIS Type field broadcast by the ship's transponder; full pleasure craft fleet at /vessel-type/yacht and full KY flag list at /flag/ky.

MarineRadar shows the latest AIS broadcast from IMPROMPTU 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.

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.

IMPROMPTU is classed by AMERICAN BUREAU OF SHIPPING, the classification society responsible for inspecting the vessel against safety, structural and operational rules. As a pleasure craft, IMPROMPTU sits in the same design class as the other pleasure crafts listed in the Similar Vessels section of the vessel page, or in the full pleasure craft directory at /vessel-type/yacht. IMPROMPTU has a gross tonnage of 490 GT.