I do not think so. In my experience, when I ping the target several times, the reading are off by hundreds of yards, sometime by over one thousand yards. Someone else advised me to ping the target and wait for the return ping, but the results were as I already noted. I'll keep trying.
I cannot finish the mission in late '41 to drop the agent in the Bungo Strait. Tokkyo's Revenge with map contacts disabled. The dd and its companion, a small split freighter, lurk nearby and find my boat every time. You know what that means....!