How quickly could Taiwan mine the strait in a crisis?
Short answerIt depends on the mix of aircraft, ships, submarines and pre-positioned systems, but large-scale mining is a central and practical defensive option.
NotesNo single timetable is credible without knowing the mine-delivery plan. Aircraft can seed broad areas quickly, ships can carry volume, submarines can lay mines covertly and pre-positioned launch systems could respond almost immediately. Taiwan has had strong reasons to study those options over a long period. The operational point is that a dense mine barrier offers a comparatively direct way to make an amphibious approach through the strait slower and more dangerous.