Master Shipwright Thomas Strickland had been sent from Great Britain to take control of the construction project. With Sir James Yeo and Point Frederick yard commissioner Robert Hall, Strickland re-designed Frigate B, completely planking the upper deck, creating a spar deck which allowed an increase of armament from 38 to 56 guns. As built, Frigate B was  long between perpendiculars and  long at the keel.
Master Shipwright Thomas Strickland was dispatched from Great Britain to oversee the construction project. Sir James Yeo and Point Frederick yard commissioner Robert Hall collaborated with Strickland, redesigning Frigate B by adding a deck above the main deck, creating a spar deck that increased armament from 38 to 56 guns. As constructed, Frigate B had an elongated hull between its perpendiculars and keel.