适航证书 Certificate of seaworthiness ; seaworthy certificate ; Seaworthiness Certificate ; Certificdined on of seaworthiness

航行证书航运执照 navigation certificate

试航证书 Certificate for Trial Voyage

适航证明书 Airworthiness Certificate ; certificate of airworthiness

船舶适航证书 Seaworthiness Certificate ; certificate of seaworthiness

船舶适航证书适航证书 Seaworthiness Certificate

临时适航证书 interim seaworthiness certificate

无限航区证书 Certificate of Non-restricted Waters

有限航区证书 Certificate of Restricted Waters

企鹅英语导航丛书 Really Useful English Idioms ; Business English Verbs ; Really Useful English Words