During her 1931 Spring Cruise, HMS Nelson passed through the Panama canal. February 22nd she left from Kingston, Jamaica, and on the 23rd she arrived to receive a pilot and a US Liason officer. She suffered some minor damage entering the Pedro Miguel Lock, but finally berthed at Balboa for five days of festivities and ceremonies including a visit of her officers to the battleship USS Texas. On the 28th she made a return trip through the canal [1].
[1] McCart, N., Nelson & Rodney, 1927-1949, The big battleships, Maritime Books, 2005
Below are a number of postcards; the quality of good enough you can read the name of the locks on the small buildings (on the scan that it).
Entering the first Gatun lock at the far North of the canal
Entering the second Gatun lock.
Passing the Gaillard/Culebra cut
Entering the first Miraflores lock at the far South of the canal.
There’s a spectacular range of images of the event taken from the shore at the Naval History and Heritage Command website, and when I look a bit closer at image NH-57847 I believe I can spot the camera man on the bridge who took the above photographs.