• Units
• Auxiliary Corps New!!
• Custom Battle Units
• Buildings
• Technologies
• Household New!!

Rome Management Tier 4

Double Plank Construction

Ship construction in the ancient world developed in response to the perceived need for bigger, stronger vessels. Double planking allowed the ancient shipwrights to build vast, strong hulls whilst keeping the ships light and manoeuvrable. The technique used two types of wood, with the inner layer constructed from a softer material than the exterior. In some cases a layer of lead separated the two woods in vulnerable areas of the ship, while cloth or wool soaked in wax would also be placed between the layers to add waterproofing.

Node Set Management Tier 4

research_points 1000

cost_per_round 0

Effects

• +5% replenishment rate for all armies and fleets
• -5% recruitment costs for all ships
• -5% upkeep cost for all fleets

Requires
Requires Technologies	Naval Manoeuvres

Enables
Enables Technologies	Fore & Aft Rigging
Enables Buildings	Portus Classis Coastal Patrol