Psenhyris Trireme Wharf (Location)
A military dock in Faiyum Oasis.
A sprawling dock, with the treasure in a central tent.
Come in over the south tower and take out the guard there. The tree nearby can be used to approach the command tent.
Trap the brazier, and enter the tent through the backflap.
Loot the chest and kill the captain to complete the location. The kill will startle the nearby guards, but not bring them running.
You can also free the prisoners at the very northern shore for some spare XP.