“使上船”可以翻译为 “get someone on board” 或者 “help someone board the ship/boat” 。
“get someone on board” 比较简洁常用，在口语和书面语中都适用，例如：The crew managed to get the injured passenger on board quickly.（船员们设法迅速让受伤的乘客上了船 。）
“help someone board the ship/boat” 表达更具体直白，强调“帮助”这个动作，比如：The volunteers helped the elderly people board the boat.（志愿者们帮助老人们上了船 。）