15.3.1 The operating station shall 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 shall be designed
so that an all-round view of the horizon is obtained by using two
navigating workstations combined or by any other means to the satisfaction
of the Administration.
15.3.2 Blind sectors shall be as few and as small
as possible, and not adversely affect the keeping of a safe look-out
from the operating station. If stiffeners between windows are to be
covered, this shall 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 shall not exceed
20° . Each individual blind sector shall not exceed 5°. The
clear sector between two blind sectors shall not be less than 10°
.
15.3.4 Where it is considered necessary by the
Administration, the field of vision from the navigating workstation
shall 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, shall 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, shall permit one navigator to
safely manoeuvre the craft to a berth.