User blog comment:Homuhomu123/Preliminary Test on the Type 3 Shell Bonus Against Anchorage Water Demon/@comment-26193115-20150605081257

It's truth about sanshiki bonus in both daylight and  nightbattle. But due to limit at daylight where the damage pre-cap acheive first 150 and while at night it's 300 and only modify after post-cap like if at night your DD using torpedo cut-in with 150% damage for an example, the damage cap modify will be applied after it while in daylight it is applied after engagement form wherether your damage is over 150 pre-cap or not.

Still the limited of your test is testing with high armor enemies. From I what ran 3-5 north. You can easily seeing the difference between a CA equipwith Sanshiki VS CA without Sanshiki. Since Hoppo chan armor is low,. Easily to nocited. In both day and night battle. Your CA will always dealing scratch damage if without a Sanshiki while thone CA with sanshiki can one VS Hoppo in both day and night battle even she is chuuhaa.