Could naval-constructor training hinder an officer's career?

Would a three-year naval-construction course damage an officer's career unless senior leaders supported it?

Senior support was essential and existed in that period because construction and damage-control skills were valued.

Three years away from ordinary duties could harm promotion prospects unless senior leaders valued the qualification. In the period under discussion, senior support for construction and damage-control expertise is offered as the answer to that concern. Trained officers could also join a lead ship's shakedown cruise and recommend meaningful alterations for later ships of the class.