Related Rule
Ecuador
Practice Relating to Rule 38. Attacks against Cultural Property
Ecuador’s Naval Manual (1989) provides:
Buildings devoted to religion, the arts, or charitable purposes, historic monuments and other religious, cultural or charitable facilities should not be bombarded, provided they are not used for military purposes. 
Ecuador, Aspectos Importantes del Derecho Internacional Marítimo que Deben Tener Presente los Comandantes de los Buques, Academia de Guerra Naval, 1989, § 8.5.1.6; see also § 8.6.2.2 (protected objects).