Where to catch ferry from Hong Kong to Zhongshan?

I notice there are ferry terminals on the HK island side and on the Kowloon side and confused as to which one I should be staying near.

Where will I be catching the ferry:
1. On the HK Island side which is called the HK Macau Ferry Terminal ?
2. On the Kowloon side (Tsim Sha Tsui side) which is called the China Ferry Terminal ?

thanks
William