World War 1. The sinking of this ocean liner is what convinced the US to join in the war on the Allied side. PS: Lusitania was an RMS, not an HMS. The ship was not commissioned in the British Navy, although it allegedly carried supplies for war.
It was about a ship named "HMS Pinafore" in the navy.
HMS Beagle
No. There was an HMS Rodney, a battleship named for a great British Admiral of the 1700s. There was an HMS Romney, but it was a minesweeper, a small auxiliary craft.
At 4 p.m: 56, probably °F = 13.3°C, Source logbook of HMS Juno cruiser
There were quite a few British liners sunk by German U-Boats during WWI, but I suspect the answer you seek is the most famous one. This was the Lusitania, sunk in May 1915 off the coast of Ireland by U-20, with the loss of more than 1500 lives, including 128 Americans.
Belfast
This inshore survey vessel has been re-named HMS Myrmidon, but no further information is available in Wikipedia- sorry...
Lusitania has 2 sisters so they say which are the MAURITANIA nad the AQUITANIA
The HMS Blazer is a Patrol Boat in the British Navy.
HMS Duke of York HMS King George V HMS Ruler HMS Speaker HMS Newfoundland HMS Whelp HMS Wizard HMS Wager HMS Terpsichore HMS Tenacious HMS Teazer HMS Quality HMS Derg HMS Crane HMS Whimbrel
Britain argued for years that the Lusitania didn't carry any contraband. When salvage operations began, they acknowledged that there were some 5000 cases of small ammunition aboard. The wreck hasn't been totally explored but we know that it was a little more than a neutral passenger vessel.