There are different choices available depending on the purpose and budget. We are however talking more on motor boat / motor yacht here rather than sailing yachts. If you don’t want to spend too much and you are looking for a safe comfortable boat that you can drive yourself with a small family and children and enjoy the waters in Hong Kong and go to different islands, then a boat around 28 footer is quite good, A new Karnic speed boat which is a 28 footer costs around HKD 600,000 over all. The reason for this specific size is because this is the smallest size that can have a marine toilet which is of course small but usable. If you are a lady or like to have your wife or any ladies to accompany you on the boat then a toilet is very necessary. Storage and parking of boats this size is also easy and they can be lifted up easily for dry dock storage, maintenance is also very simple and not expensive if the boat has outboard engine. With inboard engine boats for first timers, you could get stuck with a engine if something goes wrong and needs a lot of repairs.
If you are looking for a larger motor yacht that you can use personally and also as a corporate entertainment, then you can go for a 40 to 45 footer boat, which normally can be a good for a family to stay for a weekend. The boats are also used normally for day trip and office parties where people can go on a island or a swimming spot and spend the day eating and drinking on the boat. People normally hire a captain to drive such boats. Berthing and mooring space can be a little bit of a challenge to find as the size of your boat gets bigger but it is possible nowadays in Hong Kong. But if you are looking for a marina club membership and berths, then be ready to hear ridiculous prices from Marina clubs who think they are monopoly in Hong Kong.
Click here to see ultimate guide to buy a boat in HK, this article explains different types of boats and machinery