1. As a traditional shipping center and trade center, many ships at home and abroad will call at Hong Kong for cargo transshipment. Up to now, many liner and oil tankers still take Hong Kong as the only way, so Hong Kong's supporting facilities in ship fuel and material supply are very mature, which is in line with the habits of major shipping companies.
2. the price problem.
About oil:
1. Generally, the main engine of large ships will use heavy oil.
2. Generally, light oil will be used for auxiliary machines, emergency generators of large ships or small ships. Usually, diesel oil and gasoline are light oil.
As for the difference between heavy oil and light oil, look it up online, there are many.