A new regulation aimed at protecting seafarers who need to enter enclosed spaces, by requiring ships to carry portable atmosphere testing equipment on board, entered into force on 1 July 2016. The new regulation XI-1/7 Atmosphere testing instrument for enclosed spaces in the International Convention for the Safety of Life at Sea (SOLAS), requires ships to carry an appropriate portable atmosphere testing instrument or instruments, capable, as a minimum, of measuring concentrations of oxygen, flammable gases or vapours, hydrogen sulphide and carbon monoxide, prior to entry into enclosed spaces. More information can be found here.