castle Dockyard
造船所
A Dockyard allows the construction of larger ships, and improves trade.
造船所可以建造更為大型的船舶，並提高貿易吞吐量。

castle Naval Drydock
遠洋船塢
A Naval Drydock allows the largest ships to be constructed, and also allows the free passage of much cargo.
遠洋船塢可以建造最為大型的船舶，並且可以吞吐大量貿易貨物。

castle Shipwright
船塢
A Shipwright allows the construction of ships to be undertaken in earnest.
船塢可以大為提高船舶建造效率。

city Dockyard
造船所
A Dockyard allows the construction of larger ships, and improves trade.
造船所可以建造更為大型的船舶，並提高貿易吞吐量。

city Naval Drydock
遠洋船塢
A Naval Drydock allows the largest ships to be constructed, and also allows the free passage of much cargo.
遠洋船塢可以建造最為大型的船舶，並且可以吞吐大量貿易貨物。

city Shipwright
船塢
A Shipwright allows the construction of ships to be undertaken in earnest.
船塢可以大為提高船舶建造效率。