Is there a ferry from Hong Kong to ZhongShan

Yes, at the China-Hong Kong City Ferry Terminal, there are 9 ferries departing to Zhongshan from 07:15 to 20:00.

I`m leaving to ZhongShan a day after tomorrow. Tomorrow the weather condition is rainy. So I´ll take a ferry from Kawloon China Terminal at 8:30 and be back to Hong Kong late afternoon. This is my first contact to mainland China - I have a double visa and will go to Beijing (Ulanbaator, Irkutsk anf St. Petersburg) after a week. The ferry cost is one way 210 HK$.