Sail inventory and crossover chart

A bare polar answers how fast the boat can sail. A sail inventory answers which sail produces that speed and when the crew must change it.

Sails belong to a saved boat. Only the boat's owner can edit the inventory, even when the boat is lent to a project.

Describe the wardrobe

For each sail, record its name, type, and wind envelope. A blank boundary means no boundary. Order the list the way you want it presented; order does not make one sail faster.

A sail can use the boat's base polar or point to its own saved polar. Attaching a table to a sail explicitly saves that polar on the owner's account, under the same privacy rules as any other saved polar.

Route with the sail locker

The locker is off by default. Enable Route with the sail locker when you want the route to stay inside the sails actually carried and pay the configured time for changes.

The result reports the sail in use and the number of changes. A route without the locker remains a pure performance-polar route and makes no claim about sail selection.

Read the crossover chart

The crossover chart places true wind angle on the horizontal axis and true wind speed on the vertical axis. Each cell is coloured by the fastest eligible sail there.

An own polar label means that sail has a separate performance table. No sail means every envelope excludes the cell. No speed means a sail is allowed there but its polar has no usable answer, commonly inside the no-go zone.

Use the chart to find brittle boundaries before routing. If two sails exchange the lead every few degrees or knots, a route with many changes may be technically optimal and operationally poor; increase the change cost or simplify the wardrobe used for that run.