Western Sea
From Tolkien Gateway
The Western Sea was the broad ocean that lay off the western coasts of Middle-earth, that in earlier days could be sailed westward to Númenor, and then to distant Aman in the Uttermost West.
The Western Sea was the broad ocean that lay off the western coasts of Middle-earth, that in earlier days could be sailed westward to Númenor, and then to distant Aman in the Uttermost West.