Colregs Lights Quick quiz - test your knowledge - lights of ships at night
Coastal Safety
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Colregs Lights Quick quiz - test your knowledge - lights of ships at night
57 578 просмотров · 8 лет назад
Coastal Safety
20,8 тыс. подписчиков
57 578 просмотров · 8 лет назад
Colregs Lights Quick quiz - test your knowledge - lights of ships at night. International regulations for the prevention of collisions at sea. IRPCS
