Planked Design of Viking Vessels

This page is the CodyCross answer for the clue below from African grasslands, Group 1556, Puzzle 5 (Warm Temperatures).

Question is: Planked Design of Viking Vessels

and the answer is: LAPSTRAKE

Word Meaning:

LAPSTRAKE — (uncountable) A style of boatbuilding using overlapping planks.

Definitions from Wiktionary.