SB2C = Son of a Beech, Second Class.
And, while the dear ol' Barracuda could haul a good load, it took a l-o-n-g time to gain any altitude at maximum load. Mind you, it was gloriously ugly, especially when folded for storage, when that great RN pilot Eric 'Winkle' Brown described it as having all the appearance of having suffered a nasty accident.