- Problem: Determine the number torpedoes it takes to sink a Taiyo class CVE in RFB and Stock SH4 v1.5
- Test conditions:
Date: 1 June 1944
Sub: Balao Class SS
Target: Taiyo Class CVE
Location: West Coast of South America. This is to ensure no interference from any other units.
Weapons: Mk23 torpedoes
Setup: Balao SS at periscope depth head north a 0 kts. Taiyo CVE bearing 000 at 1000 yards, heading 090 a 0 kts (ship set to “dock mode” in mission editor so it can not move)
Sub targeting set to Auto with periscope locked on center of Taiyo CVE
Torpedo depth set to 10 feet. Torpedo pistol and speed set to default
First torpedo fired with a spread angle set to 0
Second torpedo fired with a spread angle set to 2 degrees left
Third torpedo fired with a spread angle set to 2 degrees right
Fourth torpedo fired with a spread angle set to 4 degrees left
Fifth torpedo fired with a spread angle set to 4 degrees right
Special note: Modified the Balao .upc file to ensure that both Stock and RFB version of the subs had a full load of Mk23 torpedoes.
- General Comments:
There are two files that control the damage model for any unit. First, the units.zon file and system level Zone.cfg file. Neither RFB nor RSRDC changes the .zon file of the Taiyo Class CVE. RSRDC does not change the Zone.cfg, but RFB does. After examining the .zon file for the Taiyo Class CVE to determine which sections of the Zone.cfg that where used, it was found that the only differences between the Stock and RFB was the values for Flood time ( values were on average 3 times that of Stock ) and the addition of “special effects” (explosion and fires). It also should be noted that the “aim points” for the “test case” are near the forward and aft ammo magazines, fuel bunker and engine room. Each of these areas has a 5% chance of catastrophic failure that will cause the ship to sink immediately.
-Test Runs: Conducted ten runs for both Stock and RFB, After firing first torpedo, confirmed hit, then used TC to advance time 15 minutes and observer results, repeated firing torpedoes until ships sinks.
Run one - Stock: 3 Torpedoes / RFB 3 Torpedoes
Run two - Stock: 3 Torpedoes / RFB 3 Torpedoes
Run three - Stock: 2 Torpedoes (catastrophic failure)/ RFB 3 Torpedoes
Run four - Stock: 3 Torpedoes / RFB 2 Torpedoes (catastrophic failure)
Run five - Stock: 3 Torpedoes / RFB 3 Torpedoes
Run six - Stock: 3 Torpedoes / RFB 1 Torpedoes (catastrophic failure)
Run seven - Stock: 3 Torpedoes / RFB 3 Torpedoes
Run eight - Stock: 1 Torpedoes (catastrophic failure) / RFB 3 Torpedoes
Run nine - Stock: 3 Torpedoes / RFB 3 Torpedoes
Run ten - Stock: 3 Torpedoes / RFB 3 Torpedoes
- Conclusion: There is virtually no difference between Stock and RFB in the number of torpedoes it takes to sink a Taiyo class CVE. The only difference noted was it took on average it took the RFB ship 25% longer to sink by flooding.
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