Are they legall in the uk ?
Here in Iceland is evrything is wery boltet down conserning the laws around boats. Lights are have ther own sett of laws, what kind of light bulps and so on. Becuse evry boat larger than 6 meters is registerd and must have an overhaul ones a year by some inspection guy from the goverment. And nobody can sail those boats vithout a licence ( up to 30 tons).