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I'm goin' down · 07-28-10, 02:55 AM

I attacked an Akita Maru with map contacts on, but I plotted the readings. I have given up on manual speed calcs. I used the TDC for that. However the TDC course determinations were inaccurate. To make a long story short, the target course I plotted with your mod was solid. I lined up for a broadside, the target was doing 10 knots, and I set the firing point for 350 degrees. But, I must be getting senile, as I fired when the target crossed the 340 degree bearing and all the shots missed.

However, I did learn some tricks. First, it is easier to plot if the target is heading your way. Second, since the sub is moving, it is better to slow down to 1/3 or 2/3 standard when you take readings. When you plot the readings, the angle of the protractor will be more accurate than if the sub were proceeding at standard speed or faster. Third, as the target gets closer, you can sometimes get a good range reading off the PPI scope even with the dial on underneath the radar screen turned all the way to the left.

07-28-10, 02:55 AM	#225
I'm goin' down Ocean Warrior Join Date: Sep 2008 Location: Notify command we have entered the Grass Sea Posts: 2,822 Downloads: 813 Uploads: 0	Nisgeis I attacked an Akita Maru with map contacts on, but I plotted the readings. I have given up on manual speed calcs. I used the TDC for that. However the TDC course determinations were inaccurate. To make a long story short, the target course I plotted with your mod was solid. I lined up for a broadside, the target was doing 10 knots, and I set the firing point for 350 degrees. But, I must be getting senile, as I fired when the target crossed the 340 degree bearing and all the shots missed. However, I did learn some tricks. First, it is easier to plot if the target is heading your way. Second, since the sub is moving, it is better to slow down to 1/3 or 2/3 standard when you take readings. When you plot the readings, the angle of the protractor will be more accurate than if the sub were proceeding at standard speed or faster. Third, as the target gets closer, you can sometimes get a good range reading off the PPI scope even with the dial on underneath the radar screen turned all the way to the left.