Historically, the name "St George's Channel" was used interchangeably with "Irish Sea" or "Irish Channel" to encompass all the waters between Ireland to the west and Wales to the east. Some geographers restricted it to the portion separating
Wales from
Leinster, A 2004 letter from the St.George's Channel Shipping Company to
Seascapes, an
RTÉ Radio programme, said that St George's Channel bordered the Irish coast between
Howth Head and
Kilmore Quay, and criticised contributors to the programme who had used "Irish Sea" for these waters. == Limits ==