Equitable Principles from the Perspective of International Law of the Sea

The notion of equitable principles is considered in public international law as a subsidiary source of law. However, it is nevertheless an autonomous concept in the law of the sea, and particularly in the law of maritime delimitations. However, can this notion in international litigation of maritime delimitation be defined both in form and in substance? Thus, can one say precisely in which legal category it is classified, and can its content be defined