It was customary on all British passenger ships for the master to conduct 'divine service' every Sunday. One of the public rooms would be rigged up for this. I can only ever recall one ship having a dedicated chapel and this was a matter for comment. She was built for the Latin American trade.
If the master was unable to officiate because of navigational exigencies the job would be delegated elsewhere, usually to one of the senior pursers.
I inadvertently forfeited a purser's berth with Cunard when I let slip that I was an 'unbeliever'. The interviewer, Roger Wadeson whom some may know, said that taking divine service was part of the purser's remit and faith was de rigeur.
Since that time I've always been "C of E" on the application form, the lesson being - always conform!
Noel