Hi, I will travel to Shekou from HK Ferry Terminal. Is it possible to buy tickets online?

Hi Colin, the booking service is available on the official website of SK Port. You can search for China Merchant Shekou Ferry Terminal Services Company to find the website.

Hi Selina, thanks for your prompt reply. I would be grateful if you can confirm I have found the correct webpage, as it seems only available in Chinese language. The English language link is of no help.
I am unable to proceed.

Yes, you are true! The booking page only has Chinese version. U may turn to your Chinese friend for help. Or the Chu Kong Passenger Transport Co., Ltd. has English booking webpage. You may have a try! Or, just arrive early and buy the ticket on the spot upon arrival! Good luck! :)

Thanks again Selina. This website starts well but then also goes into a Chinese version & doesn't allow to continue.
I will take at the port, although worried about availability.
Thanks anyway.