Each July, amateur radio clubs worldwide operate from the various museum vessels, many of which are from the World War II era.  Currently there are over 60 ships around who operate on a number of the amateur radio bands, making contacts with other ships and amateur radio operators throughout the world.

The following ships are regular participants in the event:

 

Ship	Callsign	Class
B143	ON4BRN/sub	Submarine
Battleship Texas	W5VID	Battleship
CSS  Acadia	VE0MMA	Research Ship
EX MS Dresden	DL0MCM	Freighter
H.M.S. Belfast	GB2RN	Cruiser
HDMS Peder Skram	OZ1RDN	Frigate
HMAS Vampire	VK2CCV	Destroyer Daring Class
HMCS Fraser	VE0NED	Destroyer
HMCS Haida	VA3XJF	Destroyer
HMCS Sackville	VE1ACK	Destroyer
HMS Onyx	GB0NYX	Submarine
HMS Plymouth	GB2PLY	Frigate
HMS Smaland	SK6SL	Destroyer
HNLMS Abraham Crijnssen	PI4MRC	Minesweeper
HNLMS Mercur	PA0JLS/A	Minesweeper
HNLMS Snellius	PI4ADH	Surveyor
LS Ambrose	K2LRE	Lightship
LS Westhinder	ON4BRN/LGT	Lightship
MS Hoogeveen	PI4ADH	Minesweeper
MS Keihaassalmi	OI1AXA	Minelayer
MS Rudolph Diesel	DL0DAU	Minesweeper
MS Seefalke	DK0SN	Salvage Tug
MV  Columbia	W7BU	Lightship
MV Cap San Diego	DL0MFH	Freighter
MV Frederic Mistral	OE6XMF/FM	Tugboat
MV Helsinki	OH5AD	Lightship
MV Pluto	DF0MV	Minesweeper
MV Valley Camp	W8EUP	Great Lakes Freighter
ORP Blyskawica	3 Z0BLY	Destroyer
Skages Rev	OZ7DAL	Lightship
SS  W.G. Mather	W8WGM	Merchant Ship
SS American Victory	W4AVM	Victory Ship
SS City of Milwaukee	K8GWW	Passenger Ferry
SS Jeremiah OBrien	K6JOB	Liberty Ship
SS John W. Brown	W3TFR	Liberty Ship
SS Kaiser Wilhelm	DF0FF	Paddle Steamer
SS Lane Victory	W6LV	Victory Ship
SS Red Oak	K6YVM	Victory Ship
STR Portland	W7P	Sternwheeler
U9	DK0SP	Submarine
US Naval Academy	W3ADO
USCGC Ingham	W4RUX/4	Coast Guard Cutter
USCGC Taney	WB3AAL	Coast Guard Cutter
USS Alabama	W4BPR	Battleship
USS Albacore	W1WQM	Submarine
USS Bancroft	KB4NSB	Submarine Memorial
USS Batfish	WW2SUB	Submarine
USS Becuna	WB2LNR	Submarine
USS Blue Back	W7SUB	Submarine
USS Cabot	WA2TTX	Aircraft Carrier
USS Cassin Young	K1RMC	Destroyer
USS Cavalla	KM5LO	Submarine
USS Clamagore	NJ4DU	Submarine
USS Cod	K8KRG	Submarine
USS Drum	W4BPR	Submarine
USS Edson	K2EDS	Destroyer
USS Hazard	WB0ZLM/ W0CAP	Minesweeper
USS Kidd	W5KID	Destroyer
USS Laffey	WA4USN/4	Destroyer
USS Lexington	W5LEX	Aircraft Carrier
USS Ling	NX2ND	Submarine
USS Lionfish	W2SUB	Submarine
USS Littlerock	W2PE	Cruiser
USS Massachusetts	KN1EPL	Battleship
USS Missouri	KH6BB	Battleship
USS New Jersey	NJ2BB	Battleship
USS North Carolina	NI4BK	Battleship
USS Olympia	WA3BAT	Cruiser
USS Orleck	AC5YP	Destroyer
USS Pampanito	NJ6VT	Submarine
USS Requin	NY3EC	Submarine
USS Salem	K1USN	Cruiser
USS Saratoga	WA1USA	Aircraft Carrier
USS Silversides	W8ZHO	Submarine
USS Slater	N2USN	Destroyer Escort
USS Stewart	K5LMO	Destroyer Escort
USS The Sullivans	W2TU	Destroyer
USS Torsk	NK3ST	Submarine
USS Wisconsin	W4WIS	Battleship
USS Yorktown	WA4USN	Aircraft Carrier
W.G. Mather	W8WGM	Steamship