Walmer Castle first appeared in Lloyd's Register (LR), but with minimal information.

Walmer Castle, John Thorne, master, sailed from the Downs on 5 September 1846 and arrived at Port Jackson on 23 December 1846.

Walmer Castle sailed from Plymouth on 12 September 1848 and arrived at Sydney on 30 December 1848.

She was under the command of Joseph Thorne, and had Dr John Neill Waugh as Surgeon-Superintendent.

She had a crew of 50, ten passengers in cabin accommodation and 301 government=sponsored emigrants in steerage.