Three ships of the Royal Navy have borne the name HMS Gladiator, after the Gladiators of the ancient Roman Empire:
HMS Gladiator was a 44-gun fifth-rate Roebuck-class ship of the Royal Navy. She was launched on 20 January 1783 by Henry Adams of Bucklers Hard. She spent her entire career on harbour service, never putting to sea. Even so, her crew earned prize money for the seizure of two Russian and five American ships. Her sessile existence made her an excellent venue for courts-martial and a number of notable ones took place aboard her. She was broken up in 1817.
Gladiator was commissioned in December 1792 under Lieutenant Samuel Hayter as a convalescent ship. Then, still under Hayter, she was recommissioned in February 1794 as a guardship. In December 1795 she was under the command of Lieutenant Stephen Parker, followed by Lieutenant Emanuel Hungerford from September 1799. She was Rear-Admiral Sir Richard Bickerton's flagship from February 1800 to May. Lieutenant Joseph Bromwich then took command of Gladiator, being succeeded in September by Lieutenant John Connolly. From December 1801 she was again a convalescent ship and the flagship for Rear-Admiral Sir John Holloway until to April 1802 when she was paid off.
HMS Gladiator was a second class protected cruiser of the Royal Navy, launched on 8 December 1896 at Portsmouth, England. She was of the Arrogant class rated at 5,750 long tons (5,840 t) displacement, with a crew of 250 officers and men. She had three distinctive stacks amidships with a conspicuous bridge well forward. She served with the Mediterranean Squadron.
Gladiator was ordered to be commissioned at Portsmouth on 15 February 1900 to take out relief crews for the Australia Station.
During a late snowstorm off the Isle of Wight on 25 April 1908, Gladiator was heading into port when she struck the outbound American steamer SS Saint Paul. Visibility was down to 800 yd (730 m), but the strong tides and gale force winds required both ships to maintain high speeds to maintain steerage.
Lookouts on each vessel saw the approaching danger off Point Hurst. The American ship attempted to pass to the port side, the standard procedure in such a situation. Lacking room for the manoeuvre, Captain William Lumsden choose to turn the opposite direction, ensuring a collision. Both ships attempted to slow but both were exceptionally heavy (Saint Paul was built for conversion in wartime to a cruiser). They hit at about 3 knots (5.6 km/h; 3.5 mph). Saint Paul struck Gladiator just aft of her engine room.