Lord Admiral Imp's Map Fragment

This piece of tattered parchment shows the familiar waters and landmasses of the Deadfire Archipelago, but without the other pieces it's impossible to tell where it points or how to get there.

A note is scribbled in the margins:

"IMP. GUARD PARCHMENT, YES? NO GIVE AWAY. NO TRY AND SELL. WHEN OTHER CREWSTINK FIND YOU, FOLLOW THEM FOR TREASURE, YES?

GOOD IMP.

Captain Henqua"