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| | RVN Navy |
 | | The command boat, was a modified LCM [Landing Craft, Medium], armed with two 20mm cannon, two.30 and two.50 caliber machine-guns, and one 81mm mortar. |
 | | River Patrol Group 51 was formed in Jun 1968, containing the first eight PBRs [Patrol Boat, River] turned over by the U.S. Navy; it was assigned duty on the Long Tau and Dong Nai rivers. |
 | | There were four naval zones, with a varying mix of patrol craft (PC), patrol motor gunboats, and coastal minesweepers (totals of seven, 48, and 12, respectively?), along with 12 motor launch minesweepers. |
| vietnamresearch.com /mrf/rvn_navy.html (827 words) |
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