4.20 Assigning, Marking and
Recording of Subdivision Load Lines
(1) In order that the required degree of subdivision shall be maintained a load line
corresponding to the approved subdivision draught shall be assigned and marked on
the ship’s sides;
(2) Subject to Section (3), the subdivision load lines assigned and marked shall be
recorded in the Passenger Ship Safety Certificate, and shall be distinguished by the
notation P1 for the principal passenger service configuration, and P2, P3, etc., for
the alternative configurations and the principal passenger configuration shall be
taken as the mode of operation in which the required subdivision index R shall have
the highest value.
(3) Where assessed using the deterministic means in accordance with Part VI of
this Chapter, the subdivision load lines assigned and marked shall be recorded
in the Passenger Ship Safety Certificate and shall be distinguished by the
notation C.1 for the principal passenger condition and C.2, C.3, etc., for the
alternative conditions.
(4) The freeboard corresponding to each of these load lines shall be measured at the
same position and from the same deck line as the freeboards determined in accordance
with the ILLC. (See also section 3.3 and 3.4 of Chapter 3 of
the Code.)
(5) The freeboard corresponding to each approved subdivision load line and the
service configuration, for which it is approved, shall be clearly indicated on the
Passenger Ship Safety Certificate.
(6) In no case shall any subdivision load line mark be placed above the deepest load
line in salt water as determined by the strength of the ship or the ILLC.
(7) Whatever may be the position of the subdivision load line marks, a ship shall in
no case be loaded so as to submerge the load line mark appropriate to the season and
locality as determined in accordance with the ILLC.
(8) A ship shall in no case be so loaded that when it is in salt water the
subdivision load line mark appropriate to the particular voyage and service
configuration is submerged.