In this case for testing, I've made the bb shp000 and the PT spawns near the terrain center except the PT boat isn't visible.
F28HGR000, cvhanger, -1337722.668, 28.000, -656841.122, 0.0000, 0.0000, 0.0000, 1024, 27, 3, -1.00, -1.0, -1, 0, 0, 0, 0, -1
F28MPR000, mpr0, -1338159.959, 0.000, -658674.771, 0.0000, 0.0000, 0.0000, 1024, 27, 9, -1.00, -1.0, -1, 0, 0, 0, 0, -1
F28OFC000, dbrief, -1336385.030, 0.000, -660097.222, 0.0000, 0.0000, 0.0000, 3328, 27, 10, -1.00, -1.0, -1, 0, 0, 0, 0, -1
F28SHP000, bb, -1306698.405, 0.000, -662688.071, 0.0000, 0.0000, 0.0000, 3328, 27, 26, -1.00, -1.0, -1, 0, 0, 16, 0, -1
F28SHP001, de, -1302504.033, 0.000, -661286.377, 0.0000, 0.0000, 0.0000, 3328, 27, 26, -1.00, -1.0, -1, 1, 0, 0, 0, -1
F28SHP002, de, -1311574.867, 0.000, -661298.495, 0.0000, 0.0000, 0.0000, 3328, 27, 26, -1.00, -1.0, -1, 2, 0, 0, 0, -1
F28SHP003, de, -1311018.890, 0.000, -667979.919, 0.0000, 0.0000, 0.0000, 3328, 27, 26, -1.00, -1.0, -1, 3, 0, 0, 0, -1
F28SHP004, de, -1303416.342, 0.000, -667012.890, 0.0000, 0.0000, 0.0000, 3328, 27, 26, -1.00, -1.0, -1, 4, 0, 0, 0, -1
F28SHP005, ca, -1304898.522, 0.000, -657258.569, 0.0000, 0.0000, 0.0000, 3328, 27, 26, -1.00, -1.0, -1, 5, 0, 0, 0, -1