Option 5

Replacement Naval Units
Some naval units have a bone-colored box around their availability year. In a later year, a replacement for that unit will be available with a gold-colored box.
 * If the original unit has already been scrapped, the replacement is scrapped as well.
 * Otherwise, during the Reinforcement Stage, the original unit may be scrapped;
 * If the original unit was scrapped from the force pool, or face-down on the production circle, put the replacement in the force pool.
 * If the original unit was scrapped from the repair pool, the construction pool, or face-up on the production circle, put the replacement in the construction pool.
 * If the original unit was scrapped from the map, put the replacement in the repair pool.
 * The 2 Japanese battleships Shinano and Kii each may be replaced by one of two replacement CVs; the other replacement for that battleship is scrapped.

Reinforcements
CW home countries other than the UK may receive no more than 1 CP as reinforcements each turn.