6.11.1 Ships fitted with lifting appliances meeting the requirements
of the Rules for the Classification and Certification of Lifting
Appliances of Ships and Offshore Units (NR 184 DNC) may be assigned
the following additional class notations:
6.11.2 The additional class notations (ALP), (ALM), (ALS) may be assigned by the Society in lieu of of the notations ALP, ALM, ALS respectively, when the corresponding lifting appliances meet the requirements of specific National Regulations under the conditions defined in Rule Note NR 184 DNC.
6.11.3 The additional class notations ALP, ALM, ALS, (ALP), (ALM) or (ALS) are optional. However, the Society may require the compliance of lifting appliances with the assigning conditions of one of the above mentioned additional class notations for the classification of ships or offshore units, when one or several lifting appliances are of a primary importance for their operation, or when such appliances significantly influence their structure. As a rule, such is the case for the shear leg pontoons, crane pontoons, crane vessels, supporting ships for diving devices and when the lifting appliances concerned have special high capacities, for example in case of ships specially equipped for handling very heavy loads.
6.11.4 In compliance with [6.1.3], these notations are assigned a construction mark as defined in .