Survivability denotes the ability of a ship and its on-board systems to remain functional and continue designated mission in a man-made hostile environment.[3] The naval vessels are designed to operate in a man-made hostile environment, and therefore the survivability is a vital feature required from them. The naval vessel’s survivability is a complicated subject affecting the whole life cycle of the vessel, and should be considered from the initial design phase of every war ship.[4]
The classical definition of naval survivability includes three main aspects, which are susceptibility, vulnerability, and recoverability, although recoverability is often subsumed within vulnerability.[5]
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, manoeuvrability, chosen aspect presented to the threat).[4]
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 fire fighting, limiting the extent of flooding and dewatering. Besides the equipment, the crew also has a vital role in recoverability.[6]
Russian shipbuilding industry has largely recovered from Soviet breakup . They could build warships of any size except maybe large US style aircraft carriers and they have proven that in recent years . What remains to be seen is what could Russia afford and what are their plans for future of the navy .
