A unit of measurement of kinematic viscosity when a Redwood viscosimeter is used. Standard temperatures of 21°C for lubricating oil and 37°C for fuel oils are used.

In August 2002, Seatrade Groningen took delivery of the innovative reefer vessel LOMBOK STRAIT built by CSBC Taiwan.

A vessel designed to carry goods requiring specific climatic conditions during transport, such as meat, fruit and fish.

The hybrid reefer/container vessel CARMEL ECOFRESH, built by the Portuguese shipyard Estaleiros Navais de Viana do Castelo, is fitted with the first Wärtsilä Sulzer RT-flex60C main engine.

The monitoring and alarm system, which registers complete history of individual reefer containers, recording all important parameters and storing the data in a log file.

A virtual line displayed on the radar screen separating the fairway for inbound and outbound vessels so that they can safely pass each other.

Refined coal is the product of the application of a coal-upgrading technology that removes moisture and certain pollutants from lower-rank coals such as sub-bituminous and lignite (brown) coals and raising their calorific values.

A complete maintenance and refurbishing process usually requiring the equipment overhaul and repair, cleaning and painting.

The reflectance of the surface of a material is its effectiveness in reflecting radiant energy.

The reflected ray corresponding to a given incident ray, is the ray that represents the light reflected by the surface.

Reflection seismology (or seismic reflection) is a method of exploration geophysics that uses the principles of seismology to estimate the properties of the Earth's subsurface from reflected seismic waves.

The refracted ray or transmitted ray corresponding to a given incident ray represents the light that is transmitted through the surface.

In optics, the refractive index (also known as refraction index or index of refraction) of a material is a dimensionless number that describes how fast light travels through the material.

A refractory material or refractory is a material that is resistant to decomposition by heat, pressure, or chemical attack, and retains strength and form at high temperatures.

Refractory metals are a class of metals that are extraordinarily resistant to heat and wear.

A refrigerant is a working fluid used in the refrigeration cycle of air conditioning systems and heat pumps where in most cases they undergo a repeated phase transition from a liquid to a gas and back again.

An insulated shipping container designed to carry cargoes requiring temperature control. It is fitted with a refrigeration unit which is connected to the ship electrical supply.

Fish processing vessels, fishing vessels, and mother ships of fishing fleet which are provided with facilities for freezing fish and their products.

Spaces designed for the storage of perishable cargo. Refrigerated cargo spaces are intended to transport perishable cargo while refrigerated stores are intended to preserve perishable foods for shipboard use.

A process in which the temperature of a space or its contents is reduced to below the one of their surroundings.