25.while vessel is port in port cooling sea water is supplied by port service cooling sea water pump , marine growth preventing system is very difficult to use and not safety for operation , to be solved.
船舶在港时，冷却的海水由港内海水冷却泵完成，很难启用海上防污系统且操作不安全，待解决。
Port Service
原声例句
航海英语听力
英语百科
The Port Service
（重定向自Port Service）
The Port Service Corporation(ポートサービスPōto Sābisu) is a passenger ship operating company in Yokohama.
Founded in 1953, the company operates seabuses, an excursion cruise ship, and a restaurant ship, all within the Port of Yokohama. The services include public lines listed below, as well as chartered ships.
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