Truk - Dec '42

[ESPY]

Anybody familiar with the traffic routes into Truk in Dec '42 (TMO 2.5 + RSRD)?

I received a radio message indicating arrival of at least 3 convoys from home waters on the 11th, 15th, and 18th and have made a couple attempts to intercept but keep coming up empty.

First time I patrolled an area due north of Truk, thinking they might navigate one of the two channels that lead south to Truk. The other time I stayed NW of Truk patrolling an area around the line between Truk and Tokyo.

Thanks!
ESPY