[magnio]

It's true. Here is the 13th 5-year plan by the Ministry of Agriculture. It does say "总数稳定在3000", which means to stabilize the number of vessels.

http://jiuban.moa.gov.cn/zwllm/ghjh/201712/t20171221_5985078...

Also for more details about the ODI estimate: https://www.cffacape.org/publications-blog/how-large-is-the-...