KGarrad awesome, you have sharp eyes! I'm a novice, just adding my two-penny worth:
- On top right, printed / typed words "from" "to" and "for what"
- Dates in right column range between 1909 and 1919 (Could be 1902 as you say)
Of the ships you identified:
- Many active service and training & establishment ships named HMS Impregnable but none during 1909 - in 1902 there was one though
- HMS Lion (launched 1910) was a Lion-class battlecruiser
- Many RN ships named HMS Pembroke but none on service during the above decade; some were renamed Pembroke and served as base & depot ships: HMS Trent (1905 -17), HMS Nymphe (1917-20), HMS Achilles (1919-23)
- HMS Juno (1895-1920) Eclipse-class protected cruiser
- HMS Shannon (1906-22) was a Minotaur class armoured cruiser