Jan Lameijer has been actively engaged in matters related to COLREGS and Ships' Routeing as an advisor to the Netherlands Administration from 1969 until 2010.As a representative of the Netherlands Administration Jan has been active for about 35 years in working groups of the Sub-Committee of Safety of Navigation, concerning COLREGS and Ships' Routeing. For more than 10 years Jan acted as chairman of NAV-subcommittee working group on ships routeing.In recognition contributions to navigation, The Council of the Royal Institute of Navigation awarded Jan the Institutes Gold Medal for the year 2004.