“船底穿洞”可以翻译为 "a hole in the hull of the ship" 或 "the ship's hull is breached"。
A hole in the hull of the ship：直接描述了船底出现洞这一现象，清晰明了。
The ship's hull is breached：使用了“breach”这一动词，表示船底被穿透或破裂，语气稍强，常用于描述较为严重的情况。