SIGMA 300 Radio Zeeland DMP Radio / Radio Holland / Velden B.V. / MC Alphatron B.V. / Alphaturn MF Alphatron Marine B.V. / Turnmaster 2 Sperry Marine Sperry Marine B.V. / / Radio Holland Radio Zeeland DMP B.V. / Turnmaster 2 Sperry Marine B.V. / Zeeland DMP Radio Holland Radio Zeeland DMP B.V. / DMP/ Radio Holland Radio Zeeland DMP B.V. / Alphatron Marine B.V. / ROT 2000 Radio Holland Rotterdam Radio / Navigatie Apparaten B.V. / Schwarz Technik Litton Marine Systems B.V. / RZ Products B.V. / /
List of rate-of-turn indicators approved in accordance with the Rhine Vessel Inspection Regulations Rate-of-turn indicators which were approved before 1 January 1990 in accordance with the provisions regarding