 The report of the Liberian enquiry into the disaster concluded that the master and pilot of the "Tien Chee", in an attempt to get enough water for her deep draught, had probably been navigating too far to the south of the channel and had pushed the "Royston Grange" onto the shelf that bordered it.The British ship had bounced off and into the tanker.The officers of the "Royston Grange", it concluded, were probably not to blame, although there may have been some human error in attempting to avoid the collision.