emergency support vessel
/ɪmˈɜːdʒənsi ɪlˈɛktɹɪk ˈməʊtə/
n
English · emergency support vessel中文 · 海上救援船Español · embarcación de emergenciaFrançais · barge de service d’urgence
意味：Floating structure equipped with specialized equipment; it is used for rescue operations on drilling rigs.