15.3.1 The operating station should be placed
above all other superstructures so that the operating crew are able
to gain a view all round the horizon from the navigating workstation.
Where it is impractical to meet the requirements of this paragraph
from a single navigating workstation, the operating station should
be designed so that an all-round view of the horizon is obtained using
two navigating workstations combined or any other means to the satisfaction
of the Administration.
15.3.2 Blind sectors should be as few and as small
as possible, and not adversely affect the keeping of a safe lookout
from the operating station. If stiffeners between windows are to be
covered, this should not cause further obstruction inside the wheelhouse.
15.3.3 The total arc of blind sectors from right
ahead to 22.5° abaft the beam on either side should not exceed
20°. Each individual blind sector should not exceed 5°. The
clear sector between two blind sectors should not be less than 10°.
15.3.4 Where it is considered necessary by the
Administration, the field of vision from the navigating workstation
should permit the navigators from this position to utilize leading
marks astern of the craft for track monitoring.
15.3.5 The view of the sea surface from the operating
station, when the navigators are seated, should not be obscured by
more than one craft length forward of the bow to 90° on either
side irrespective of the craft's draught, trim and deck cargo.
15.3.6 The field of vision from the docking workstation,
if remote from the operating station, should permit one navigator
to safely manoeuvre the craft to a berth.