spawning

[The Kraken Wakes]

Hi Everyone,
could some kind person help me with a couple of small questions about the ME.
1. When I add a new naval base, I would like to have the blue anchor that the other bases have, but mine doesn't have it. I can refit, but no anchor on map.
2.
I set up a mission where when the sink tonnage objective was completed, it was meant to spawn another instance of the original convoy. But it didn't.
So how do I get spawn to work ? I am trying to produce a conveyor belt of torpedo fodder.

Thanks for any help
T K W