If you are going for historical...1500 yards are closer. Doctrine...1500 yards are closer. PorthsmouthProwler is on the money. Getting to 1500 yards are better leave little to chance. If you are off by 1 knot in speed calculation....not a big deal, the bow shot now hits a few yards back of the bow. Not matter..you hit the vessel.
Locking the scope.... not needed. You are the stalker, set up your attack. Get to 1500 yards or better and at 90 degrees to target. When sonar calls out slow screws...figure about 7-8 knots. Medium screws 9-11 knots. Fast screws, pull the plug there is a warship after your arse. If you are unsure, use the spread angle on the TDC to compensate for possible speed miscalculations.
After a while, the player can just about tell the speed by bow wake or splash. Also, the time it is taking the target to reach the optimal firing position. If it is taking long and the TC button is looking good...the vessel is doing 6-7 kts. If you have it set up to 11 you are screwed. If the vessel is gaining on you optimal firing solution very quickly and the sonarman is calling out changes in degree quickly the target speed should be up to 10.5-11.
Make mental notes, eventually you will be calling out the solutions like the well seasoned skippers did.
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“You're painfully alive in a drugged and dying culture.”
― Richard Yates, Revolutionary Road
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