القاعدة ذات الصلة
Peru
Practice Relating to Rule 29. Medical Transports
Section C. Respect for and protection of hospital ships
Peru’s IHL Manual (2004) states:
Military hospital ships, that is to say, ships built or equipped by the Powers specially and solely with a view to assisting the wounded, sick and shipwrecked, to treating them and to transporting them, may in no circumstances be attacked or captured, but shall at all times be respected and protected, on condition that their names and descriptions have been notified to the parties to the conflict ten days before those ships are employed. 
Peru, Manual de Derecho Internacional Humanitario para las Fuerzas Armadas, Resolución Ministerial Nº 1394-2004-DE/CCFFAA/CDIH-FFAA, Lima, 1 December 2004, § 157.f; see also §§ 87.a and b, 129.a.(1) and 172.h.
The manual further states:
(1) The exemption from attack of a hospital ship may cease only by reason of a breach of a condition of exemption and, in such a case, only after due warning has been given naming in all appropriate cases a reasonable time limit to discharge itself of the cause endangering its exemption, and after such warning has remained unheeded.
(2) If after due warning a hospital ship persists in breaking a condition of its exemption, it renders itself liable to capture and other necessary measures to enforce compliance.
(3) A hospital ship may only be attacked as a last resort if:
(a) diversion or capture is not feasible;
(b) no other method is available for exercising military control;
(c) the circumstances of non-compliance are sufficiently grave that the hospital ship has become, or may be reasonably assumed to be, a military objective;
(d) the collateral casualties or damage will not be disproportionate to the military advantage gained or expected. 
Peru, Manual de Derecho Internacional Humanitario para las Fuerzas Armadas, Resolución Ministerial Nº 1394-2004-DE/CCFFAA/CDIH-FFAA, Lima, 1 December 2004, § 129.c.
The manual also states: “The names and descriptions of hospital ships must be notified to the parties to the conflict. Hospital ships and coastal rescue craft can be ordered to stop, move away or follow a certain route.” 
Peru, Manual de Derecho Internacional Humanitario para las Fuerzas Armadas, Resolución Ministerial Nº 1394-2004-DE/CCFFAA/CDIH-FFAA, Lima, 1 December 2004, § 110.c.
Peru’s IHL and Human Rights Manual (2010) states:
Military hospital ships, that is to say, ships built or equipped by the powers specially and solely with a view to assisting the wounded, sick and shipwrecked, to treating them and to transporting them, may in no circumstances be attacked or captured, but shall at all times be respected and protected, on condition that their names and descriptions have been notified to the parties to the conflict ten days before those ships are employed. 
Peru, Manual de Derecho Internacional Humanitario y Derechos Humanos para las Fuerzas Armadas, Resolución Ministerial No. 049-2010/DE/VPD, Lima, 21 May 2010, § 148(f), p. 335; see also pp. 396–397.
The manual also states:
The following categories of enemy ships may not be attacked:
(1) Hospital ships.
(2) Coastal rescue craft and other means of medical transport. 
Peru, Manual de Derecho Internacional Humanitario y Derechos Humanos para las Fuerzas Armadas, Resolución Ministerial No. 049-2010/DE/VPD, Lima, 21 May 2010, § 120(a)(1)–(2), p. 310.
The manual further states:
b. Conditions for immunity
… [Hospital ships] only enjoy immunity from attack if:
(1) They act in a way consistent with their usual activities.
(2) They submit to identification and inspection as requested.
(3) They do not intentionally obstruct the movement of combatants and obey orders to stop or move away as requested.
c. Loss of immunity
(1) The immunity of a hospital ship from attacks may only cease if it does not comply with any of the conditions for immunity and, if this is the case, it shall not cease until after due warning has been given, naming, in all appropriate cases, a reasonable time limit to discharge itself of the cause endangering its immunity [from attack], and after such warning has remained unheeded. 
Peru, Manual de Derecho Internacional Humanitario y Derechos Humanos para las Fuerzas Armadas, Resolución Ministerial No. 049-2010/DE/VPD, Lima, 21 May 2010, § 120(b)–(c)(1), p. 310.