Great Yarmouth, often called Yarmouth, is a seaside town which gives its name to the wider Borough of Great Yarmouth in Norfolk, England; it …Great Yarmouth, often called Yarmouth, is a seaside town which gives its name to the wider Borough of Great Yarmouth in Norfolk, England; it straddles the River Yare and is located 20 miles east of Norwich. Its fishing industry, mainly for herring, shrank after the mid-20th century and has all but ended. North Sea oil from the 1960s supplied an oil rig industry that services offshore natural gas rigs; more recently, offshore wind power and other renewable energy industries have ensued.