MMSI 244670653 · Call sign PF2881
Not yet on Master's MateDE TWAALF is a craft under the Dutch flag, 15 metres from stem to stern. She's built with a 5 m beam. On AIS she shows as MMSI 244670653, call sign PF2881. Claim DE TWAALF free on the Master's Mate Safety Initiative Network and let nearby cruisers have her back.
Your free claim unlocks the most powerful cruising platform ever built — anchor watch, worldwide charts, live AIS, weather routing, and a network of cruisers watching each other’s backs.
Claim this boat — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Joining the Safety Initiative Network doesn't just put DE TWAALF on the map. It hands you the full bridge:
© 2026 Master’s Mate. All rights reserved.