Which trees were promoted for building ships or railways?

Hardwoods like oak, teak, and mahogany were commonly promoted for building ships due to their strength, durability, and resistance to rot. For railways, trees such as spruce and pine were favored for their lightweight properties and ease of handling. Additionally, hardwoods like beech and ash were also utilized for specific components due to their toughness. These materials were essential for ensuring the longevity and safety of maritime and rail transport infrastructure.