Although the Army and Marine Corps get the bulk of the press as a result of the Gulf War, the extreme gap between Iraq and the U.S. led coalition is probably most blatantly demonstrated in naval forces:

Iraq: 5 Frigates, 32 Patrol Boats, 6 "Amphibious ships".
Coalition: 6 Attack Carriers, 1 Assault Carrier, 1 Battleship, 11 Cruisers, 31 Frigates, 16 Destroyers, 6 Submarines, and a host of other combat & support ships, numbering about 110 altogether (this might not represent the number on station during hostilities due to confusion over replacements and rotations).

It doesn't take the legendary Rocket Scientist to figure out why the Iraqi navy was not effective. The Battle of Kahfji is a well known and oft-recounted prelude to the main ground battle, and involved Iraqis in unsuccesful combat with U.S. Marines, and Arab forces. However, most sources overlook that the Iraqi attack included an amphibious assault down the Saudi coast to cut off Arab & Marine forces along the coast road. The Iraqi amphibious force had the misfortune of encountering the British Royal Navy prior to encountering the Saudi coast, and there was no amphibious assault; the entire Iraqi force was sunk.

United States Naval Forces

• Persian Gulf Squadron (USN)
  Command Ships: La Salle, Blue Ridge
  Battleships: Missouri, Wisconsin
  Missile Cruisers: England, Horne
  Destroyer: David Ray
  Frigates: Bradley, Reid, Barbey, Vandergrift, Taylor, Rentz, Jarrett
  Minesweepers: Adroit, Leader, Avenger, impervious

• Persian Gulf Amphibious Group (USN)
  Helicopter Carrier: Inchon
  Transport: Nashville
  LSD: Whidbey Island
  LST: Newport, fairfax County
  Amphibious Ready Group 3, with 5th Marine Expeditionary Brigade

• Carrier Group Saratoga (USN)
  Attack Carrier: Saratoga
  Aegis Cruiser: Phillipine Sea
  Destroyers: Sampson, Spruance
  Frigates: Montgomery, Hart

• Carrier Group Kennedy (USN)
  Attack Carrier: John F. Kennedy
  Aegis Cruiser: Gates, San Jacinto
  Missile Cruiser: Mississippi
  Destroyer: Moosbrugger
  Frigate: Roberts
  Supply Ships: Seattle, Sylvania
  

• Carrier Group Midway (USN)
  Attack Carrier: Midway
  Aegis Cruisers: Bunker Hill, Mobile Bay
  Destroyers: Hewitt, Oldendorf
  Frigates: Curtis, Rodney Davis

• Carrier Group Roosevelt (USN)
  Nuclear Carrier: Theodore Roosevelt
  Aegis Cruiser: Leyte Gulf
  Missile Cruiser: Richard K. Turner
  Destroyer: Caron
  Frigate: Hawes, Vreeland
  Supply Ship: San Diego
  Fleet Oiler: Platte
  Ammunition Ship: Nitro

• Carrier Group America (USN)
  Attack Carrier: America
  Aegis Cruiser: Normandy
  Missile Cruiser: Virginia
  Destroyer: Preeble, William V. Pratt
  Frigate: Hakleyburton
  Fleet Oiler: Kalamazoo
  Ammunition Ship: Santa Barbara

• Carrier Group Ranger (USN)
  Attack Carrier: Ranger
  Aegis Cruiser: Valley Forge, Princeton
  Destroyer: Will, Foster
  Frigate: Hammond
  Fleet Oiler: Kansas City
  Ammunition Ship: Shasta

Coalition Naval Forces

• United Kingdom (Royal Navy)
  Destroyers: York, Gloucester
  Frigates: Jupiter, Battleaxe
  Minehunters: Cattisock, Hurworth, Atherstone
  Tanker: Orangeleaf
  Hospital Ship: Argus

• Portugal
  Supply Ship: Sao Miguel (to act as replenishment vessal for the UK Royal Navy)
  

• Canada
  Destroyers: Athabascan, Terra Nova
  Supply Ship: ??

• Australia
  Destroyer: Brisbane
  Frigate: Sydney (replacing Adelaide & Darwin)
  Supply Ship: Success

• France
  Frigates: Protet, Commandant Ducing, Montcalm, Dupleix
  Tanker: Durance

• Belgium
  Frigate: Windelaar
  Minesweepers: Iris, Myosotis
  Support Ship: Zinnia<

• Netherlands
  Frigates: Witte de With, Pieter Florisz
  Support Ship: Zuiderkruis

• Italy
  Frigates: Orsa, Libeccio, Zeffro
  Corvettes: Sfinge, Minerva
  Supply Ship: Stromboli

• Spain
  Frigate: Numancia (replacing Santa Maria)
  Corvettes: Diana, Infante Cristina (replacing Cazadora & Descubierta)

• Greece
  Frigate: Elli (replacing Limnos)