BBs and CVs take much time to be produced, so gearing bonus is a good thing. What should I do when I have new class of capital ships? Keeping the gearing bonus or switching to the new kinds of ship?
The most important aspects i take into account for keeping older ships in production are:
1) Will their "old ship" range hinder with the range of the fleet it will be deployed to?
Most capital ships at level III have a longer range than even the most modern escorts (DD IV), so it's not that much of a problem. But certain capitals (CV I, II, BB I, II, CA I, II, CVL I, II) have shorter range than a DD IV or aTP. And THAT is a problem, unless you can find a good use for a short-ranged fleet (coastal defense, local-short transport escort). Or if you have old escorts and complementary capitals to form a new fleet.
2) Speed.
Certain capitals have VERY low speed values - particularly BB I, II and CVL I, II.
Incluiding one of those old ships into a modern CTF or SAG will reduce it's speed to a crawl, leaving you unable to pursue enemy fleets or to escape from fleets you can't defeat. I'd rather have a SAG that can run and hide in port from a USA superstack than to have a slow SAG that will be engaged in every single sea province it retreats to.
BBs and CVs take much time to be produced, so gearing bonus is a good thing. What should I do when I have new class of capital ships? Keeping the gearing bonus or switching to the new kinds of ship?