人们认识到，通常由玻璃钢（GRP）制成的小型容器可能是雷达信号的不良反射器。在雷达是海上船舶使用的主要观测工具的情况下，国际海事组织认为，在这种情况下，被视为150总吨位以下的小型船舶必须配备雷达反射器，以增强其雷达回波，从而提高其对雷达的能见度。 ISO 8729规定了IMO MSC决议要求的雷达反射器的最低要求，该反射器旨在增强小型船舶的返回。 164(78). 雷达反射器有两种类型:无源和有源。被动反射器是机械式的，而主动反射器有一个电子元件。 ISO 8729-1:2010涉及被动反射器，并给出了此类雷达反射器的构造、性能、测试、检查和安装规范。

It is recognized that small vessels, often made of glass reinforced plastic (GRP), can be poor reflectors of radar signals. In situations where radar is the prime observation tool used by ships at sea the International Maritime Organization considers that it is essential that small vessels, considered in this context to be those under 150 gross tonnage, be equipped with a radar reflector to enhance their radar return and thus to improve their visibility to radar. ISO 8729 specifies the minimum requirements for a radar reflector intended to enhance returns from small vessels as required by IMO Resolution MSC. 164(78). There are two types of radar reflector: passive and active. Passive reflectors are mechanical, whereas active reflectors have an electronic element. ISO 8729-1:2010 concerns passive reflectors and gives specifications for the construction, performance, testing, inspection and installation of such radar reflectors.