The Isle of Man Steam Packet Company signed the Sea Services Agreement with the Isle of Man Government's Department of Infrastructure in May 2018. The Sea Services Agreement sets service levels for operation to the Isle of Man.
In the 12 months to November 2024, IOMSPC sailings were 97.73% reliable. Reliability is determined by the number of actual sailings as a percentage (%) of all scheduled sailings, inclusive of weather cancellations.
In the 12 months to October 2024, IOMSPC sailings were 91.2% punctual. Sailings that depart early or within 15 minutes of the scheduled departure time, are classed as punctual. This does not include sailings with emergency response.