SUBSIM Radio Room Forums - View Single Post - My 2nd Patrol and Advice for promotions and upgrades..

CA406079 · 07-14-06, 02:24 PM

Thanks for all the helpful advice so far...

I really like the U-Cruisers, I'm unrealistically hoping you can arm them with a 2nd deck gun aft of the conn, but i'm still having a frustrating time hitting ship accurately, still sometimes missing at only 400 meters.

I've taken to MANUALLY calculating my lead using algebriac formula. The only caveat is I need to know the PRECISE speed setting of the t1 steam torpedos.

The Uboat upgrade screen lists these speeds as 30-40-44 (slow-med-fast)
Are these in fact correct?

I plot speed and course using the nav map and the 3:15 rule, and then form an algebra equation with my known factors; range to target (typically 350-450 meters), speed of torpedo, speed of ship, and this gives me the distance I have to fire from my mark (I maneuver to 90* with my sights right down the bow)

Vx = target speed 9 kts
Vy = torp speed aprox.44 kts?
Y = distance to target (eg 400 meters)
X = distance from bow centreline I need to fire from (my lead)

Vx X
__ = __
Vy Y

Vx(Y)
____ =X
Vy

9kts (400m)
________ =X , X= 81.2 meters lead from my 0* crosshair...
44kts

I think i was missing before because I was using 37.5 knots for my fast speed setting calculation.

Hows that sound to you guys?

What are the best depth settings and locations you have found to work on large merchants?

thanks

john

07-14-06, 02:24 PM	#7
CA406079 Swabbie Join Date: Jul 2006 Posts: 14 Downloads: 0 Uploads: 0	Now for some math! Thanks for all the helpful advice so far... I really like the U-Cruisers, I'm unrealistically hoping you can arm them with a 2nd deck gun aft of the conn, but i'm still having a frustrating time hitting ship accurately, still sometimes missing at only 400 meters. I've taken to MANUALLY calculating my lead using algebriac formula. The only caveat is I need to know the PRECISE speed setting of the t1 steam torpedos. The Uboat upgrade screen lists these speeds as 30-40-44 (slow-med-fast) Are these in fact correct? I plot speed and course using the nav map and the 3:15 rule, and then form an algebra equation with my known factors; range to target (typically 350-450 meters), speed of torpedo, speed of ship, and this gives me the distance I have to fire from my mark (I maneuver to 90* with my sights right down the bow) Vx = target speed 9 kts Vy = torp speed aprox.44 kts? Y = distance to target (eg 400 meters) X = distance from bow centreline I need to fire from (my lead) Vx X __ = __ Vy Y Vx(Y) ____ =X Vy 9kts (400m) ________ =X , X= 81.2 meters lead from my 0* crosshair... 44kts I think i was missing before because I was using 37.5 knots for my fast speed setting calculation. Hows that sound to you guys? What are the best depth settings and locations you have found to work on large merchants? thanks john Last edited by CA406079; 07-14-06 at 08:16 PM.