are they doing?They ________ ballast water.

Incorporating protection against macro risks:ballast,not bulletproofing什么意思?
ballast,not bulletproofing是一个什么比喻?不太懂...

英语翻译
The term ‘enclosed space’ includes cargo,ballast,fuel,fresh water tanks,duct keels etc.however Masters and Chief Engineers are to carry out an onboard inspection to identify other spaces which through lack of regular use or any other reason,may be considered potentially dangerous.These spaces are to be clearly marked with appropriate warnings,stating that enclosed space entry procedures must be followed.

英语翻译
在船上收废品的人用英语怎么称呼?他们常收的废品,废料是什么?
压载水是ballast water吗?那压压载水和排压载水怎么说?木匠量水怎么说?
前后准备?serveyor有多少种,怎么区分?
能提供点实际常用,好用的英语最好!

英语翻译
isolation
the third and last method for water ballast management is isolate the water on board ,or in other words to prevent that water from the location of departure in comes in contact with water at the location of arrival.there are three solutions.
1 to deliver the water onshore where it can be treated separately without affecting the operational discharging and loading procedures.water can than be processed by a land-based reception facility.this solution requires large infrastructure at every port ,ensuring sufficient capacity for all ships .presently these facilities are not (yet)
available in ports .
2 to return the water to its origin .this can only be done by ships sailing on a fixed route and with sufficient deadweight to carry this amount of ballast water during the loaded voyage.for most ships this means that paying capacity is reduced to allow for taking sufficient ballast water
3 to keep the water ballast outside the vessel.this means that vessel design is such that no ,or only very limited ballast water is required to guarantee both fully laden and when empty
最近考证时间紧，没分了，