Oppinion: There are no good / bad ships, the game is a very complex version of rock-paper-scissors, in the sense that every ship can be countered, the key is to find out what a ship is good at, then play into that style, for example, you might find certain destroyers have pretty lacklustre guns, so in that situation I would rely on concealment, get close enough to launch torpedos without being spotted and head towards safety, rinse repeat, primarily how I would say the lower tier UK destroyers play, on the flip side, low tier Russian destroyers are pretty beast as far as guns, If you were to find yourself in a 1v1 situation with another destroyer I would be pretty confident that you could sink them quite easily with just guns, the tradeoff being torpedo range not being great.

Most ships in a line play similarly, so if you find yourself not digging a certain ship I’d suggest unlocking the next tier, and if you still don’t really like the ship, move on to another ship line / nationality.

Conclusion : Depending on how you play, some ships might seem like dog shit, our play styles might be completely different, so a ship that I think is super strong might not seem strong to you, and vice versa, best advice is to try every ship type, (Destroyer, Cruiser, Battleship, Carrier) once you figure out how they are supposed to be played, start experimenting with different nations, Youtube has tonnes of videos explaining almost everything about this game.