Ultra Large Container Vessel
Abbreviation: ULCV
Container ships >= 14,500 TEU — too large for the new Panama locks; restricted to Asia-Europe and Asia-East-coast-US-via-Suez routes.
In practice
Large container ships restricted to a small number of deep-sea hub ports (Rotterdam, Algeciras, Singapore, Yangshan). Pilot, tug, and terminal coordination is significant.
Regulatory detail & full definition
A ULCV (Ultra Large Container Vessel) is the largest class of container ship, generally taken to mean those above about 14,500 TEU, with the current top end around 24,000 TEU in classes such as the MSC Irina and Ever Alot. These ships are gearless and deep-drafted and can only be worked at a handful of deep-water hub terminals with the largest ship-to-shore cranes. They are deployed almost exclusively on the highest-volume Asia–Europe trade lane, where their scale delivers the lowest slot costs but concentrates a very large amount of cargo — and risk — in a single hull.
Related
Source: Industry usage; Alphaliner cellular fleet monthly
High confidence
Editorial confidence: how we grade.