Conversation so far:
When was the first film Jacques Cousteau made?
Jacques-Yves Cousteau and Marcel Ichac took the first ex-aequo prize of the Congress of Documentary Film in 1943, for Par dix-huit mètres de fond.
What was special about the film Par dix-huit mètres de fond that it won an award?
Jacques-Yves Cousteau and Marcel Ichac took the prize of the Congress of Documentary Film in 1943, for the first French underwater film: Par dix-huit mètres de fond.
Did Jacques-Yves Cousteau and Marcel Ichac make another film after Par dix-huit mètres de fond?
In 1943, Jacques-Yves Cousteau and Marcel Ichac made the film Épaves (Shipwrecks).
What made the film Épaves special?
In Épaves, they used two of the very first Aqua-Lung prototypes.
Who created the Aqua-Lung prototypes?
The Aqua-Lung prototypes were made by the Air Liquide company, following instructions from Cousteau and Émile Gagnan.
Was Jacques Cousteau in the military?
Cousteau belonged to the information service of the French Navy.

Question: Did he have any influence over the diving equipment designs?
Self-contained rewrite: Did Jacques Cousteau have any influence over the diving equipment designs?