The visit plan

The visit plan is the sequence of places a vessel will occupy and the moves between them. It is the operational heart of a call: the movements board, the reports and the service jobs all read from it.

Moves and stays alternate

A plan is built from two kinds of step, and they alternate strictly:

Move → stay → move → stay → move

A move has a starting point and a destination. A stay has one location and a duration. A vessel cannot move from nowhere, and it cannot be in two places at once, so the alternation is enforced rather than merely encouraged.

A transit call — a vessel passing through without stopping — is the one exception in shape: it has an inbound move and an outbound move with no stay between them.

Roles on a move

Each move carries a role describing what it is: arrival, departure, a shift between berths, or a transit leg. The role is what lets the reports distinguish a vessel arriving from a vessel merely repositioning, which matters when you are counting arrivals.

Checks and requirements

A move can carry two kinds of precondition:

• A check is something that must be confirmed before the move: the gangway is secured, the draft has been verified, the berth is clear.
• A requirement is something that must be provided: a pilot, a tug, a mooring gang.

Both are defined per port under settings, so every arrival at the same berth asks the same questions. They are attached to the move when the plan is created, and they must all be satisfied before the move can start.

Editing a plan

Steps can be inserted, removed and relocated while the call is open. Removing a stay renumbers what follows it, so the alternation is preserved without you having to fix the sequence by hand.

Once a call is closed, its plan stops accepting changes.