In order to begin a game, both players must summon the will to engage in battle. With the suppression of GUI-style interfaces, a method of tangible user input is required.
Options considered included: the placement of all ships on the tables, the blowing of a whistle and the raising of a flag - which draws to "hoisting the colours" (a dated naval term that signifies the declaration of war).
A ship bell used to start a game of Commodore.
The ringing of a ships bell was selected as:
This photo of a ship's bell and rope from a naval vessel provided inspiration for utilising a bell as a means to begin play. Image by Bruno Girin (enlarge).