2.1 General
2.1.1 Each lifting appliance and each item of loose gear is to be clearly and permanently marked with its safe working load, with an identification mark to enable it to be readily related to its appropriate test certificate and with the mark of the Surveyor or manufacturer who carried out the proof test.
2.1.2 In view of the importance of ensuring that each item of loose gear has the correct safe working load for its particular position in the lifting appliance, and to facilitate the ordering of replacements, it is recommended that a Particulars Book or a fully detailed Rigging Plan be kept on board.
2.1.3 It is recommended that the Particulars Book be based upon ISO 2333 Shipbuilding – Cargo Gear Particulars Book, which includes a set of forms designed to present the required information in a comprehensive and standardized manner.
2.1.4 It is also recommended that the Rigging Plan should make use of the list of symbols given in ISO 2333 and reproduced as Fig. 9.2.1.
2.2 Loose gear
2.2.1 Every item of loose gear, including lifting beams and similar items, is to be marked with:
(a) The safe working load of the item, in tonnes. For asymmetric lifting beams, the maximum reaction at each lifting point is also to be marked.
(b) An individual identification mark to relate it to its test certificate.
(c) A mark indicating the grade of steel in accordance with Table 9.2.1.
(d) The Surveyor's or manufacturer's stamp.
(e) For blocks, the maximum rope diameter for which the block is designed.
(f) For lifting beams and similar items, the tare weight in tonnes.
(g) Where appropriate, an identification mark corresponding to the position of the item on the ship's Rigging Plan.
2.2.2 Permanent identification marks, or symbols, are to be made with stamps having rounded profiles (low stress stamps). The number of marks on an item is to be kept to the minimum.
2.3 Steel wire and fibre ropes
2.3.1 The following information is to be marked on a disc or tally attached to the rope:
(a) An individual identification mark to relate the rope to its test certificate.
(b) The Surveyor's or manufacturer's stamp.
2.3.2 Where the rope is fitted with a ferrule or socket this is to be marked to relate it to the manufacturer's test certificate.
The marks required by 2.3.1 may also be made on the ferrule or socket where appropriate.
2.4 Derricks, cranes and launch and recovery systems for diving operations
2.4.1 Every lifting appliance is to be conspicuously and permanently marked near the heel of the boom, jib or equivalent component with its safe working load and the minimum operating angle or limiting radius as indicated in Table 9.2.3.
2.2.3 The use of fractions and oblique strokes is to be avoided and a dot or hyphen is preferable to a dividing line.
Values of SWL are, generally, to be marked to one place of decimals (except for 0,25 and 0,75) up to 100 t and in integers thereafter. The word 'tonnes' may be abbreviated to 't'.
2.2.4 Recommended sizes of marks are given in Table 9.2.2 based on the diameter of the part to be marked or on the SWL of the item as appropriate. Typical arrangements of marks are shown in Fig. 9.2.2.
Rope (wire or fibre)
Chain Clips or catches
Rigging screw Swivel Ring
Shackle Oval and other eyes Clevis eye or
open socket
Double ended fork 'C' hook
Triangle plate
Eye plate (swivelling) Block without becket Ramshorn hook
Eye plate (swivelling) Block with becket Unpowered winch
P
Powered winchTriangular lifting eye
Crane
Gooseneck assembly
Section 2
Fig. 9.2.1 Symbols for fittings used in key plans of rigging
Table 9.2.1 Material quality grade marks
Quality Ultimate tensile strength,
grade mark Grade of steel in N/mm2
L Mild 300
M High tensile 400
P Alloy 500
S Alloy 630
T Alloy 800
2.4.2 Where more than one method of rig is possible, or, for derricks, where union purchase operation is proposed, the safe working load for each method of rig is to be marked.
2.4.3 The letters and numbers are to be not less than 75 mm high and painted in yellow or white on a dark background or black on a light background.
2.4.4 The heel fitting of the appliance is to be marked with the number of the relative test certificate and with the Surveyor's stamp. The stamps are to have rounded profiles (low stress stamps).
(d) Ramshorn hooks (c) 'C' hooks
Safe working load
Range of sling angles Quality mark
M ARKS
L SWL 40t
0˚–90˚ Identivication number
and Surveyor's or manufacturer's stamp.
Marks may be on the back of hook. i.e. on the opposite side to SWL
Safe working load
Quality mark S W L 3t P M ARKS
SWL 5t P MARKS
Safe working load
Identification number and Surveyor's or manufacturer's stamp
(a) Shackles (b) Chains and links
Quality mark
Safe working load Quality mark
Weld (if any)
Front of link
SWL 2t T
Identivication number and Surveyor's or manufacturer's stamp
Back of link
MARKS
(e) Blocks
Identification number and Surveyor's or manufacturer's stamp. Marks may be on the back of block, i.e. on opposite side to SWL
Safe working load
Quality mark
SWL 5t L MARKS
Rope diameter
P
Section 2
Fig. 9.2.2 Typical marks for loose gear
3.1.5 Where the lifting appliances have also been assigned a class in the Register Book, the surveys are also to comply with 3.7.
3.1.6 Requests for other surveys not specified above will be specially considered. Such surveys will, generally, be covered by separate instructions since they will normally involve the specific requirements of a National Authority.
3.2 Initial Survey of new installations
3.2.1 Materials used in the construction of the lifting appliance are to be of good quality, free from defects and of specification acceptable to the Committee for the intended purpose. Materials test certificates are to be made available.
3.2.2 The lifting appliance is to be surveyed during construction and the Surveyor is to be satisfied that the primary structural arrangements and workmanship is in accordance with the approved plans. Any details, required for further clarification or certification purposes, not in accordance with the approved plans or otherwise found to be unsatisfactory are to be rectified.
3.2.3 All welding is to be to the satisfaction of the Surveyor.
3.2.4 Particular attention is to be given to the supporting structure for masts, crane pedestals and runways. It is to be verified that the scantlings and arrangements are in accordance with approved plans.
3.2.5 All loose gear for the installation is to be examined in order to verify that:
(a) The item has been designed, manufactured and tested in accordance with the requirements of this Code.
(b) The item is individually marked and certified.
(c) The item is of the correct SWL for its proposed location in the installation as indicated in the approved plans.
3.2.6 The lifting appliance is to be tested as required by Section 1. Cut outs, controls and similar devices are to function correctly. After testing, the installation including the supporting structure, is to be examined for deformation or distortion to the satisfaction of the Surveyor.