[LonePalm]

The "Chief of the boat" is the most senior enlisted member of a submarine's crew.

The position is analogous to the Command Master/Senior/Chief on a surface ship.

WWG1WGA

Garde la Foi, mes amis! Nous nous sommes les sauveurs de la République! Maintenant et Toujours!
(Keep the Faith, my friends! We are the saviors of the Republic! Now and Forever!)
LonePalm, le Républicain du verre cassé (The Broken Glass Republican)

[John S Mosby]

Thank you for the explanation. Submariner family way back— from the O-boats days (at least not “the Holland”, heh!).

Made a comment about CWOs on the Fleet Submarines of WWII—

Your description of COB’s role and analogous rank on a surface ship is helpful for people understanding.

The COB runs the boat. Quite a Service, the Silent Service.

Thank you!