626. In illustration D033DG below, the stringer plate is represented by which letter?

Letter A is correct; it identifies the stringer plate as the wide deck plate along the ship's side at the deck edge. A stringer plate is a horizontal plate connecting the side shell to the deck, contributing to longitudinal strength, and is distinct from the side shell, inner-bottom longitudinal, and bulkhead stiffener indicated by letters C, I, and N respectively.