Setup
Ships must be placed in specific rows based on their weapon systems.
Fleets are organized into up to 3 rows plus a submarine area. 1st row: ships with secondary batteries and/or torpedo mounts. 2nd row: ships with main batteries. 3rd row: aircraft carriers. Submarines are placed separately and designated as either Active (red) or Passive (blue). Ships may be rearranged during the Reorganize Step each turn.
Turn structure
At the start of each turn, discard expired cards, rearrange ships, and play Reorganize cards.
The Reorganize Step is the first step of each turn. Players must: (1) Discard any Retreat and Prepare cards that were played in the prior turn. (2) Rearrange ships among their legal rows (1st, 2nd, 3rd, and submarine positions). (3) Optionally play Reorganize-step action cards such as Reinforcement or Retreat.
Turn structure
Players play Prepare cards face-up in front of their fleet before attacks are declared.
The Prepare Step is the second step of each turn. Players may play any number of Prepare-step action cards face-up in front of their fleet. These cards remain in play for one full round (until the next Reorganize Step). Legal Prepare cards include: Planning (+1 to die rolls), Near Miss (block a Main Salvo), Armor Plating (block a Secondary Salvo), and Escort Ship (redirect an attack to another ship in the same row).
Turn structure
Players declare all attacks first, then defenders respond, then all attacks are resolved.
The Attack Step is the third step of each turn. The active player must first DECLARE all attacks (specifying all targets for all weapons). Each weapon may only attack once per turn. Aircraft carrier attacks must also be declared at this time. After all attacks are declared, the defending player(s) may play Defense-step cards in response. Then all attacks are resolved via die rolls, damage is applied, and any sunk ships are collected for Victory Points.
Restriction
All attacks must be declared before any are resolved.
During the Attack Step, the attacking player must declare ALL attacks against ALL defenders before resolving any single attack. This means placing dice on all intended targets showing the relevant to-hit numbers prior to rolling. This prevents players from adjusting later attacks based on earlier results.
Restriction
Each individual weapon on a ship may only be used to attack once per turn.
During the Attack Step, each weapon (secondary battery, torpedo mount, main battery, etc.) on each ship may only be used to make one attack per turn. A single ship cannot fire the same weapon system twice in one turn.
Turn structure
Players may optionally discard any cards from hand face-up to the discard pile.
The Discard Step is the fourth step of each turn. The active player may discard any number of cards from their hand face-up onto the discard pile. This step is optional.
Turn structure
Players draw back up to a hand of 7 cards at the end of their turn.
The Draw Step is the final step of each turn. The active player draws cards from the deck until they have 7 cards in hand.