SH3 clock question

[cochise571]

I have been watching tutorials on tracking ships using sonar only. I understand all the math involved but my question is probably a stupid one. How to you view the clock on the nav map to time the 3:15 sec. I have seen plenty screen shots with a wooden clock in both the nav map and tdc screen but do not know which versions they are or if they are from SH5 or other.

I have SH3 ver 1.4 and the only clock I see is at the periscope attack screen. I even tried the x key but that only raises/lower the snorkel and did not see any key commands for the clock like in SH5.