In “The Watch”, amend:

• Have a Battleship they control Shoot at up to 2 squares. (A Battleship cannot Shoot at a square adjacent to the square it is located in; a Battleship can choose to shoot at the same square twice. Battleships Shoot a Manhattan distance.)
• Have a Submarine they control Shoot at up to 1 square; this square must be from a single row (if the Submarine is Facing East (E) or West (W)) or column (if the Submarine is Facing North (N) or South (S)) which is directly between the Submarine and the grid edge the Submarine is Facing.
• Add a Battleship or Submarine under their control to a grid square of their choice and with a facing of their choice (unless the Captain giving this Order already controls a Vessel).

to

• Have a Battleship they control Shoot at up to 2 squares. (A Battleship cannot Shoot at a square adjacent to the square it is located in; a Battleship can choose to shoot at the same square twice. Battleships Shoot a Manhattan distance.)
• Have a Submarine they control Shoot at up to 1 square; this square must be from a single row (if the Submarine is Facing East (E) or West (W)) or column (if the Submarine is Facing North (N) or South (S)) which is directly between the Submarine and the grid edge the Submarine is Facing.
• Have a Minelayer they control Place at up to 1 square.
• Add a Battleship or Submarine or Minelayer under their control to a grid square of their choice and with a facing of their choice (unless the Captain giving this Order already controls a Vessel).

In “Fleets” (the first rule with that name), append the following at the end:

Minelayers are Vessels; Minelayers are Armed with Mines; Minelayers have a Range of 2 squares; Minelayers have an Armour Value of 4; Minelayers are cumbersome and have 3 movement points.

In “Fire Control”, append after the first paragraph the following:

For a Vessel to Place (at a square) is for it to create an Object at a square that is a Distance of up to that Vessel’s Range away from that Vessel’s square.

In “Armour Value and Damage”, replace

Vessels have an Armour Value. A Vessel’s Armour Value decreases when the Vessel suffers Damage. Shots cause Damage.

Battleships have a default Armour Value of 6; Submarines have a default Armour Value of 3.

Shells Shot by Battleships, and Torpedoes Shot by The Submarine decrease the Armour Value of Vessels they hit by 1.

with:

Vessels have an Armour Value. A Vessel’s Armour Value decreases when the Vessel suffers Damage. Shots cause Damage, along with Mines.

Battleships have a default Armour Value of 6; Submarines have a default Armour Value of 3; Minelayers have a default Armour Value of 4.

Shells Shot by Battleships, and Torpedoes Shot by The Submarine decrease the Armour Value of Vessels they hit by 1. A Mine Placed by a Minelayer decreases the Armour value of Vessels that Cruise over it by 2, and then removes the Mine.