Background
The tyrannical Empire, no longer content to remain in the far off continental mainland, has decided to stamp out piracy once and for all in the archipelagos and bring them under the iron fist of Imperial authority. The Imperial Navy has recently been spotted constructing small forts and landing troops of marines on previously unclaimed atolls on the outskirts of the ocean, presumably to use as a base of operations for further incursions into pirate waters.
Pirates everywhere are encouraged to head to an explorers' hall to obtain the expedition charts needed to harry and plunder these accursed Imperial outposts and ensure that free piracy will reign throughout the ocean.
Attacking an Imperial outpost
When buying a map from an explorers' hall, make sure you have ample charts around the island of purchase, because you cannot use an Imperial outpost map to take you to the outpost. A chart is used from the purchase island to an adjacent island as on a normal pillage, and then you can place the Imperial outpost map on the chart table, and the attack will appear as an expedition in the Ahoy! tab of the sunshine widget, allowing officers with the correct permissions to order the attack when the league point is reached. The outposts do not stray from normal chart league points.
Types
Imperial outposts come in 4 different sizes (small, medium, large and huge), 3 different fortification levels (fledgling, established and fortified) and either sinking or non-sinking. A map to an Imperial outpost indicates what combination of features it has. All Imperial outpost maps degrade in 3 days and are lost after a successful expedition.
Player vessels sunk in a sinking Imperial outpost are permanently lost. No injuries are unique to this expedition.