------were 1316 passengers and a crew of 891

这是倒装句,属于“全部主谓倒装”,即谓语 + 主语。“部分主谓倒装”形状是 助动词（如have,do）+ 主语 + 动词这个句子里面主语是 1,316 passengers and a crew of 891表语是 were一般这句话我们会表达成1316 passengers and a crew of 891 were on board her。on board the ship 是固定表达。