I look for a choke point, and then pick a position about 50Nm from that - I sit of one place for 2-4 days ... waiting.
At dawn I go down to 250 ft and every 2 hours have a sweep on the hydrophone.
At dusk I surface, and then goto periscope every 2 hours, for a sweep.
Time compression never above 256.
If nothing happens, after about 2 days, i move on to the next spot say 50-100Nm further on.
