July 1, 200718 yr 4.4.2.3 Towed Array: "All towed arrays are either classified as Low Speed or High Speed arrays. This is the speed it can be towed without reducing its detection range because of flow noise." Is low or high speed defined anywhere - I'm guestimating that it is the 0-50% and 51-100% of the platforms speed per their data sheet?
July 1, 200718 yr Author Thermocline (The Layer). If the surface ship's towed array deploys in Intermdiate I, below the layer, how close to shore does the thermocline extend, only close enough so that the depth "requirement" is met? Does this mean that towed arrays cannot be delpoyed in shallow water or simply not effective in shallow water due to the characteristics both geographically and acoustically?
July 2, 200718 yr 4.4.2.3 Towed Array: "All towed arrays are either classified as Low Speed or High Speed arrays. This is the speed it can be towed without reducing its detection range because of flow noise." Is low or high speed defined anywhere - I'm guestimating that it is the 0-50% and 51-100% of the platforms speed per their data sheet? As per page 4-11 Sonar Range Modifiers: Own Ship Sonar Speed Modifiers has range modifiers for: Hull Array Low Speed TA High Speed TA
July 2, 200718 yr Thermocline (The Layer). If the surface ship's towed array deploys in Intermdiate I, below the layer, how close to shore does the thermocline extend, only close enough so that the depth "requirement" is met? Does this mean that towed arrays cannot be delpoyed in shallow water or simply not effective in shallow water due to the characteristics both geographically and acoustically? In H4 you cannot deploy Towed arrays in shallow water. I have a pencilled in note that thermoclines do not form in water less than 1000 feet (Int III), but cannot remember where I got this from.
July 2, 200718 yr One of the big advantages of a towed array is to get below the "layer" but as Peter has pointed out, there may not be thermocline in shallow waters and H4 assumes this. Also, I would think streaming a towed array in especially shallow water would be a difficult (and risky from the point of view of snagging, dragging or otherwise losing an expensive piece of gear) task.
July 2, 200718 yr Author As per page 4-11 Sonar Range Modifiers:Own Ship Sonar Speed Modifiers has range modifiers for: Hull Array Low Speed TA High Speed TA Thanks Peter, I did stumble across this later in the day yesterday, but thanks again anyway.
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