At sea the Persians fielded the war ship of the day: the Trireme.

在海上， 波斯人部署了当时的战舰：三列桨战舰。

However, once outside the harbour, they faced a new threat: They were piloting a Confederate war ship heading straight for Union forces.

然而， 一出海港， 他们就面临着新的威胁：他们驾驶着一艘直奔联盟军队的邦联军舰。