27 attacks recorded (9 fatal)
| Date | Country | Region | Location | Fatal? | |
|---|---|---|---|---|---|
| Jul 1st 1948 | South Africa | Western Cape Province | False Bay | N | |
| Jul 1st 1948 | Papua New Guinea | Bougainville (North Solomons) | Tung Island, off the west coast of Buka Island | N | |
| Jul 1st 1948 | New Guinea | Morobe Province | Finschafen | N | |
| Jan 25th 1948 | Australia | New South Wales | Mona Vale, near Sydney | N | |
| Feb 12th 1948 | Australia | New South Wales | Stockton Beach, Newcastle | Y | |
| Feb 13th 1948 | USA | Texas | Gulf of Mexico between Brownsville & Carmen, Mexico | Y | |
| Mar 1st 1948 | Papua New Guinea | New Ireland Province, Bismarck Archipelago | Punam Passage, Rataman census div, Namatanai | N | |
| Mar 11th 1948 | Senegal | Cap Vert Peninsula | Between Joal & Sangomar near Dakar | N | |
| Apr 10th 1948 | South Africa | Western Cape Province | Gansbaai | N | |
| May 10th 1948 | Iran | Shatt-al-Arab River | N | ||
| Jun 6th 1948 | Northern Mariana Islands | Saipan | N | ||
| Jul 1st 1948 | Us Virgin Islands | St. John | Genti Bay | Y | |
| Aug 1st 1948 | Bahamas | Bimini | Lerner Marine Laboratory | N | |
| Aug 3rd 1948 | Iran | Shatt-al-Arab River | Bashamir | N | |
| Aug 19th 1948 | Iran | Shatt-al-Arab River | Y | ||
| Sep 2nd 1948 | Iran | Bandar Ma | Y | ||
| Sep 15th 1948 | Mid Atlantic Ocean | Bound from New York to London in ballast | Y | ||
| Sep 19th 1948 | USA | Hawaii | Off Makapauu Point, O'ahu | N | |
| Sep 19th 1948 | USA | Hawaii | Off Makapauu Point, O'ahu | N | |
| Sep 22nd 1948 | Greece | Keratsini | Y | ||
| Nov 18th 1948 | Australia | Torres Strait | Saibai Island, 80 miles north of Cape York | N | |
| Dec 5th 1948 | Pacific Ocean - North | Between Kwajalein Atoll & Johnston Island | 500 nautical miles southwest of Johnston Island | N | |
| Dec 10th 1948 | Australia | Queensland | Rib Reef off Townsville | N | |
| Dec 14th 1948 | Cuba | Guantanamo Province | 10 miles off Cape Maisi | N | |
| Dec 14th 1948 | Iran | Shat-Al-Arab River | Abadan | N | |
| Dec 26th 1948 | Australia | Queensland | King | Y | |
| Dec 27th 1948 | Australia | Western Australia | Lancelin Island | Y |