The classical definition of naval survivability includes three main aspects, which are susceptibility, vulnerability, and recoverability; although, recoverability is often subsumed within vulnerability.Reese, R. et al., Operationally Oriented Vulnerability Requirements in the Ship Design Process. Naval Engineers Journal, 110(1998)1, p. 19–34. Susceptibility consists of all the factors that expose the ship to the weapons effects in a combat environment. These factors in general are the operating conditions, the threat, and the features of the ship itself. The operating conditions, such as sea state, weather and atmospheric conditions, vary considerably, and their influence is difficult to address (hence they are often not accounted for in survivability assessment). The threat is dependent on the weapons directed against the ship and weapon's performance, such as the range. The features of the ship in this sense include platform signatures (radar, infrared, acoustic, magnetic), the defensive systems on board, such as surface-to-air missiles, EW and decoys, and also the tactics employed by the platform in countering the attack (aspects such as speed, maneuverability, chosen aspect presented to the threat). Vulnerability refers to the ability of the vessel to withstand the short-term effects of the threat weapon. Vulnerability is an attribute typical to the vessel and therefore heavily affected by the vessel's basic characteristics such as size, subdivision, armouring, and other hardening features, and also the design of the ship's systems, in particular the location of equipment, degrees of redundancy and separation, and the presence within a system of single point failures. Recoverability refers to vessel's ability to restore and maintain its functionality after sustaining damage. Thus, recoverability is dependent on the actions aimed to neutralize the effects of the damage. These actions include firefighting, limiting the extent of flooding, and dewatering. Besides the equipment, the crew also has a vital role in recoverability.Lake, J., Warship Survivability. Conference Proceedings of International Naval Technology Expo 80, Geneve, Sveitsi 1980, p. 28–50.
The classical definition of naval survivability includes three main aspects which are susceptibility vulnerability and recoverability; although recoverability is often subsumed within vulnerabilityReese R et al Operationally Oriented Vulnerability Requirements in the Ship Design Process Naval Engineers Journal 110(1998)1 p 19–34 Susceptibility consists of all the factors that expose the ship to the weapons effects in a combat environment These factors in general are the operating conditions the threat and the features of the ship itself The operating conditions such as sea state weather and atmospheric conditions vary considerably and their influence is difficult to address (hence they are often not accounted for in survivability assessment) The threat is dependent on the weapons directed against the ship and weapon's performance such as the range The features of the ship in this sense include platform signatures (radar infrared acoustic magnetic) the defensive systems on board such as surface-to-air missiles EW and decoys and also the tactics employed by the platform in countering the attack (aspects such as speed maneuverability chosen aspect presented to the threat) Vulnerability refers to the ability of the vessel to withstand the short-term effects of the threat weapon Vulnerability is an attribute typical to the vessel and therefore heavily affected by the vessel's basic characteristics such as size subdivision armouring and other hardening features and also the design of the ship's systems in particular the location of equipment degrees of redundancy and separation and the presence within a system of single point failures Recoverability refers to vessel's ability to restore and maintain its functionality after sustaining damage Thus recoverability is dependent on the actions aimed to neutralize the effects of the damage These actions include firefighting limiting the extent of flooding and dewatering Besides the equipment the crew also has a vital role in recoverabilityLake J Warship Survivability Conference Proceedings of International Naval Technology Expo 80 Geneve Sveitsi 1980 p 28–50