The word caisson can sound different in recordings from different parts of Britain. Several regional pronunciations circulate for the same dockyard term. Period naval documents introduce a second language wrinkle by spelling the modern word "showing" as "shewing". Recognizing both variations makes the later dock tables easier to follow without turning ordinary changes in pronunciation or spelling into different technical concepts.
Notable Point · 0:21-3:43
Caisson pronunciation and period spelling in naval records
Regional pronunciations of caisson and the older spelling shewing can make spoken terminology and naval records look less familiar than they are.