00:06For days, Taiwan's Coast Guard has been sending warnings to a Chinese research vessel
00:12just 29 nautical miles away from the country's southern tip.
00:16Crew aboard the boat pull up equipment, which defense experts say was likely used to survey
00:22the ocean floor, currents and noise in the waters around Taiwan,
00:26gathering intelligence for underwater warfare.
00:43The Tongji, China's first intelligent ocean-class research vessel, turned away from Taiwan's waters on Monday,
00:50but it's part of a growing fleet of vessels and civilian ships China employs to harass Taiwan,
00:57testing its maritime capabilities, sabotaging undersea cables,
01:01and gathering info on Taiwan's maritime operations.
01:05It's part of China's grey zone warfare, aggression stopping short of outright attacks.
01:19As China ramps up its grey zone tactics, Taiwan's Coast Guard has a growing list of vessels on its watch
01:26list,
01:26as it tries to keep any potential threats out of its waters.
01:30Scott Huang and Tiffany Wong for Taiwan Plus.
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