Nowadays passenger ships need a certificate renewal every five years, this requires a full inspection of the hull. I don't know the validity period of the certificate before WW2, but I don't think it would have been that different.drdoom1337 wrote:Does anybody know how often Mauretania was drydocked, or how often steamships were drydocked in general during their service runs?
In case of the lifetime of RMS Mauretania (1906-1934) this would mean she has been drydocked at least five times. Not many more anyway, as she would have been out of service for weeks or months and therefore losing revenue. In Wikipedia I found she'd been refitted in 1914, 1921 (oil firing), 1923 and in 1928.
During WW1 she of course was refurbished twice, as a troop transport and a hospital ship, and in 1928 her interior was refurbished, these refurbishments didn't require a drydock of course but most likely she had her bottom inspections at the same time. The picture below proves the point for 1928.