Why Charterparty is English Law?

Contracts are subject to the law of a certain country, usually and officially the place of performance.

However, because the place of performance of a shipping contract is likely to be in at least two countries, the usual law which applies to Charterparty is English Law, partly because that is the law traditionally associated with international transport and international trade and partly because it is widely accepted as being the most universally neutral law with little or no conflict of interest for either party.