UR A, para. A1.4.2 provides that two of the three required bower anchors must be connected to their cables and positioned on board ready for use while the third anchor is intended as a spare anchor, installation on board not being compulsorily required. Each Classification Society is free to permit other arrangements at its discretion or not to require the spare anchor as a condition of classification.
If Table 1 in IACS Unified Requirement UR A specifies that three stockless bower anchors are to be provided for a ship, why do most ships carry only two bower anchors?
