Table:
text: The Bolitho novels
Ships in which Bolitho serves
Ships served in by Richard Bolitho
Ship Guns Class_ Captain Rank_ Year_
HMS Achates 64 Third-rate ship of the line Captain Valentine Keen Vice-admiral 1802
HMS Argonaute 74 Third-rate ship of the line Captain Valentine Keen Vice-admiral 1803
HMS Hyperion 74 Third-rate ship of the line Captain Edmund Haven Captain Valentine Keen Vice-admiral 1804–1805
HMS Truculent 36 Frigate Captain Daniel Poland Vice-admiral 1806
HMS Black Prince 94 Second-rate ship of the line Captain Valentine Keen Vice-admiral 1806–1809
HMS Valkyrie 42 Frigate Captain Aaron Trevenen Vice-admiral 1809–1810
HMS Indomitable 44 Razee Captain James Tyacke Admiral 1811–1813
HMS Frobisher 74 Third-rate ship of the line Captain James Tyacke Admiral 1814

Question: Tell me the class for Admiral and HMS Frobisher among Richard's Bolitho novels ships on which Bolitho serves?