C1.1.a. If the national minimum age in a country is higher than 16, must it be reduced? C1.1.b. Who decides what work is likely to jeopardize the safety or health of seafarers under the age of 18? C1.1.c. Is there an international standard for determining the hours that constitute “night” or is this up to each country to decide? C1.1.d. What is the situation of young persons aged 16 in a recognized maritime education or training programme? C1.1.e. Can a seafarer under the age of 18 ever be expected to work at night?