Variants of a mold are catalogued separately, so each one has its own sets and minifigs. Check these too if something you expect is missing here.

• 2538 Boat, Mast Section Top 16 H with 4 stud holes at bottom, Undetermined Type this part is a mold of it
• 2537b Boat, Mast Section Middle 13 2/3 H, With Bottom Connector Prong Pair of this part