A one person sailboat in the harbor? Don't think you have really thought this through or looked into it at all.
All moorings are full. 3+ year wait to get a government one but can't go on the waiting list till you have a boat. Some moorings left in Aberdeen but they are HK$6000 a month plus laying your own power and water.
Or did you mean just floating around in HKG harbour. If you did I am surprised you got into any sort of university, even one like ER where if you have the cash your in.