sentences:  Delayed by heavy seas on 25 March the 147th Marine Brigade left Tân Mỹ the next day for Da Nang.Also on 26 March, the marine battalion of the 258th Brigade holding the Phu Gia Pass, a short, twisting defile about 15km east of Phú Lộc District Town came under attack.With the PAVN approaching the Hải Vân Pass from the north and Vietnamese Navy boats breaking down faster than they could be repaired, General Trưởng stopped the sea movement of forces and equipment from Huế.