Any techniqe, except for the initial ships, is researched for experience points before purchase. Experience points that you earn in battles are spent on exploring vehicles. Only after that it becomes possible to purchase a ship for silver.
If you need to advance in a ship branch, but don't want to buy intermediate ships, you can explore ships without buying them. It will not be possible to do without researching "intermediate" ships, since in order to open access to older ships in the branch, it is necessary to explore the previous technique.
Selling
Any vehicle in the game can be sold. All ships in the game, except for the initial ships, is sold for its partial cost in silver.
If shells and modernizations were bought on the ship, they will also go on sale at their 100% cost.
If there were upgrades on the ship, the currency for them will not be returned, but if you buy this ship again, all upgrades will remain on it.
Ship comparison
Navy War has the ability to compare ships before buying. In the right window, you will see the differences in basic characteristics and will be able to decide on the purchase of techniqe.
