Plan showing the body plan, sheer lines with inboard detail, and longitudinal half-breadth for 'Neptuno' (1795) and 'Argonauta' (1798), both Spanish 80-gun two-decker. These two ships were taken at the battle of Trafalgar, but neither survived the storm - the first being retaken and foundering, and the second scuttled.

Signed by Julian Martin de Retamosa [Shipbuilder and designer, and Lieutenant General of the Spanish Royal Navy].