Why the concept favors podded propulsion

Should the battleship use paired four- and five-bladed propellers?

Propeller geometry deserves its own analysis, but the concept was intended to use podded or impeller-based propulsion instead of traditional shafts and screws.

Blade count, blade size and shape, and installation all affect propeller performance. Those details would need their own analysis before choosing a particular arrangement. The concept instead favors thrusters and podded or impeller-based systems. Pairing four- and five-bladed propellers therefore starts from a different propulsion arrangement from the one envisaged.