Nicolas Louis de Lacaille
Argo Navis is the only constellation from Ptolemy's original list of 48 constellations that is no longer officially recognized. Due to its large size, it was split into three constellations by Nicolas Louis de Lacaille: Carina (the keel), Puppis (the poop deck), and Vela (the sails). The new constellations were introduced in the 1763 star catalog "Coelum Australe Stelliferum", which was published soon after de Lacaille's death.