I think upwards of 30 or more opf these vessels is not too large a projected number.if 056 will replace early 053 frigates on one-for-one basis, are we talking about maximum of 11 ships? if it will also have other variants (asw?) and replace 037 class (which, honestly, are in need of MUCH earlier replacement as they're obsolete ships now) then we might be looking at tens of ships by 2020.?
If they wwere to produce 4 per year, they would be there by 2020. Probably at least an additional ASW version or mod package to add that as a srtong suite as a part of the buildup
We shall see...but by doing so they would significantly upgrade their coastal patrol and littoral defense and interdiction capabilities.