What are regulations regarding visibility of ships carrying Timber as per SOLAS ?

Visibility:

Timber deck cargo should be loaded in such a manner as to ensure that the ship complies with the visibility requirements contained in SOLAS chapter V.

National deviations may exist and should be taken into consideration as required dependent on the intended voyage.

  1. The view of the sea surface from the conning position is not to be obscured by more than 2L or 500m, whichever is less, forward of the bow to 10° on either side for all conditions of draft, trim and deck cargo under which the particular vessel is expected to operate.
  2.  From the main steering position, the horizontal field of vision is to extend over an arc from right ahead to at least 60° on each side of the vessel.
  3.  The horizontal field of vision from the conning position is to extend over an arc of not less than 225°, that is, from right ahead to not less than 22.5° abaft the beam on either side of the vessel.
  4.  From each bridge wing, the horizontal field of vision is to extend over an arc of at least 225°, that is, from at least 45° on the opposite bow to right ahead and from right ahead to right astern through 180° on the same side of the vessel. The vessel’s side is to be visible from the bridge wing.

In  Other words You may also know :

  1. According to SOLAS chapter V, the view of the sea surface from the conning position should not be obscured by more than two ship lengths, or 500 m, whichever is the less, forward of the bow to 10° on either side under all conditions of draught, trim and deck cargo. National deviations may exist and should be taken into consideration as required dependent on the intended voyage.
  2. No blind sector, caused by cargo, cargo gear or other obstructions outside of the wheelhouse forward of the beam which obstructs the view of the sea surface as seen from the conning position, should exceed 10°. The total arc of blind sectors should not exceed 20°. The clear sectors between blind sectors should be at least 5°. However, in the view described in 3.1, each individual blind sector should not exceed 5°.
Window shall meet following requirements –
 
  Framing between navigation bridge windows shall be kept to a minimum and not be installed immediately forward of any work station.
  Polarised and tinted windows shall not be fitted. 
  A clear view through at least two of the navigation bridge front windows and, depending on the bridge configuration, an additional number of clear-view windows shall be provided at all times, regardless of weather conditions.

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