Given the input sentence, please extract the subject and object containing a certain relation in the sentence according to the following relation types, in the format of "relation1: word1, word2; relation2: word3, word4". Relations include: product/material produced; manufacturer; distributed by; industry; position held; original broadcaster; owned by; founded by; distribution format; headquarters location; stock exchange; currency; parent organization; chief executive officer; director/manager; owner of; operator; member of; employer; chairperson; platform; subsidiary; legal form; publisher; developer; brand; business division; location of formation; creator.

In Bath, shipbuilding has been a way of life since 1762, when the sailing ship Earl of Bute was launched, and the General Dynamics Bath Iron Works shipyard is located there now, according to the company.
subsidiary: General Dynamics, Bath Iron Works; industry: General Dynamics, shipbuilding