Related Rule
Ecuador
Practice Relating to Rule 146. Reprisals against Protected Persons
Section B. Wounded, sick and shipwrecked in the power of the adversary
Ecuador’s Naval Manual (1989) provides: “Reprisals are forbidden to be taken against: … 2. Wounded, sick and shipwrecked persons.” 
Ecuador, Aspectos Importantes del Derecho Internacional Marítimo que Deben Tener Presente los Comandantes de los Buques, Academia de Guerra Naval, 1989, § 6.2.3.2.