Merrie Melodies - Sheep Ahoy (1954)

Sheep Ahoy is a 1954 Warner Bros. Merrie Melodies cartoon directed by Chuck Jones. The short was released on December 11, 1954, and stars Ralph Wolf and Sam Sheepdog.
Mel Blanc provided for the voices of all the characters in this cartoon, however, like all Sam Wolf and Ralph Sheepdog shorts, this short is mostly composed of visual gags.
This is the second short featuring Ralph Wolf and Sam Sheepdog. The title is a play on the phrase "Ship ahoy!"
Inconsistency in naming:
Like Don't Give Up the Sheep, the names of the characters are inconsistent in this short compared to the rest of the shorts. At the beginning of the short, Sam the sheepdog is coming on duty to replace another sheepdog named Fred. As the two pass, Fred calls Sam "Fred" and Sam calls Fred "Ralph". At the end of the short they reverse the names.
This is also the only episode where Ralph's replacement is shown. Ralph's replacement (who rather resembles Wile E. Coyote) refers to Ralph as "George", and Ralph refers to him as "Sam".