Hey guys,
I'm new to SH4, worked my way through a ton of tutorials and threads here and I am now playing the Campaign with 100% realism and TMO 2.5 installed.
My objective is to take photos in Ishinomaki harbour. I got into the harbour and I am within a range of <1000 miles. There is only one ship there. I raised my periscope, locked the target, pressed the photo button in the lower left, but it still says my mission is incomplete. There is nothing else to be photographed :/ I dont know how to end that mission. Any advice?
PS: I went there before, but got attacked by a destroyer and 2 gunboats before I could enter the harbour. I had floodings and purely out of desparation I had to surface the boat. Luckily I was able to sink all three ships with my gun (I have no idea how taht worked

), went back to Midway, repaired everything, got new fuel and torpedoes and headed back for Ishinomaki.
***EDIT***
Okay, I am sorry. There was a merchant behind me, who left the harbour and was heading for the open sea. I took photos of him and suddenly my mission was completed