Talk:Construction/@comment-118.136.108.239-20140111083948/@comment-139.193.159.43-20140112194714

^Chitochiyo (Chitose and Chiyoda, the two seaplane tenders in the game), will, after their second remodel into their A forms, be the ONLY ships in the game able to attack four times in a single day battle, five with a BB present. This is the way it goes: air attack with Zuiun at opening air phase, torp attack with Ko-Hyoteki at opening torp phase, gun attack during shelling phase (twice with BBs present), another torp attack at closing torp phase. Maxed out above level 30 they're pretty deadly against anything up to World 4. A fleet of Chitochiyo + 1 BBV + 3 CLT is cheap to deploy and can usually wipe out any enemy fleet reliably with minimum damage. Most of the enemy ships will have been wiped out by the opening air attack and following 5-torpedo salvo. Survivors will be massacred, and any unlucky enough to survive the shelling phase will have to deal with a second 5-torp salvo (unless they manage to get the cruisers to moderate damage). When they hit lvl 50, you'll have the choice of keeping them as-is or converting them into Chitochiyo Carrier Kai Ni, which will turn them into the best light carriers in the game. Don't convert them into carriers before that. They're more useful as Chitochiyo A.

As for the original question, I keep every single DD I've found. At the end of each day, I send every single DD and CL solo to World 1-1. Complete every sortie and they'll come out sparkled. Fix them right away. When the clock resets for the new day, start deploying the CLs and DDs to do expeditions. Typically a DD or CL will maintain her sparkle for 2-3 expeditions, although some will lose it after a single expedition. As ships start losing their sparkle, replace them with still-sparkled ships from the pool. The more DDs and CLs you have, the  more expeditions you can finish in a day before having to repeat the solo runs.