second-rate

Short definition from Wiktionary

Adjective

1. 1
   Of a Royal Navy ship of the line in the Napoleonic Era: having 80–98 guns across three gun decks, a complement of 700–750, and weighing approximately 2,200 tons burthen.
2. 2
   Of mediocre quality; not first-rate.
3. 3
   Alternative spelling of second-rate.

Noun

1. 1
   A second-rate ship of the line.
2. 2
   Alternative spelling of second-rate.