Rrs

RRS is an acronym that can refer to multiple terms depending on context. In maritime and research contexts, it most commonly denotes Royal Research Ship, the prefix used for Britain's oceanographic and polar research vessels. These ships are operated on behalf of the government by organizations such as the National Oceanography Centre and the British Antarctic Survey, under the auspices of the Natural Environment Research Council. The prefix denotes vessels assigned to scientific research cruises rather than commercial transport.

Notable vessels carrying the prefix include RRS James Cook and RRS Sir David Attenborough, both used for scientific expeditions in oceanography, marine biology, and related fields.

In other fields, RRS is not unique and may stand for different phrases formed from the initials R, R, and S. The intended meaning is typically clarified by the surrounding text or by a formal definition in a document. Because acronyms can have multiple meanings across disciplines, disambiguation is often necessary when encountering RRS outside a maritime context.