Соответствующая норма
Practice Relating to Rule 65. Perfidy
Section A. General
Ecuador’s Naval Manual (1989) states:
The use of unlawful deceptions is called “perfidy”. Acts of perfidy are deceptions designed to invite the confidence of the enemy to lead him to believe that he is entitled to, or is obliged to accord, protected status under the law of armed conflict, with the intent to betray that confidence. 
Ecuador, Aspectos Importantes del Derecho Internacional Marítimo que Deben Tener Presente los Comandantes de los Buques, Academia de Guerra Naval, 1989, § 12.1.2.