Training till 18:30 on a sunday evening

Dear samsa how is it possible that you as the maritime law allow training sessions to run from 8am (on a sunday) up to nearly 18:30 the evening? Do you as the maritime law not have any say in these matters at training centres? It is a sunday we have families we need to attend to all other training ends off way ealier accept for a certain individual who runs his classes up till past 18:00. This is not acceptable at all.