Freeboard is the distance measured from the waterline to the upper edge of the deck plating at the side of the freeboard deck amidships.

Purpose of Freeboard:

• Ensures the ship is seaworthy when fully loaded.
• Provides reserve buoyancy, enabling the ship to rise as it passes through waves, keeping decks largely dry.
• Enhances the ship's stability and increases its survivability in case of damage by allowing it to remain afloat longer, aiding crew escape or damage control.

Conditions of Assignment are outlined in the Merchant Shipping Load Line Rules 1968 and must be satisfied before a ship is assigned freeboards and issued a load line certificate. These conditions address the practical need for openings (hatchways, doorways, vents, etc.) in the ship's hull and mandate appropriate protection and closure mechanisms for these openings.

Requirements Before Assigning Load Line:

• The ship must have sufficient structural strength.
• Adequate reserve buoyancy must be maintained.
• Openings must be secured against water ingress.
• Safety measures for the crew, such as guardrails and gangways, must be in place.

• Openings: This encompasses hatchways, machinery space openings, cargo ports, watertight doors, ventilators, air pipes, scuppers, freeing ports, side scuttles, and other openings in the freeboard and superstructure decks. The surveyor checks the condition of seals, gaskets, closing mechanisms, and overall watertightness.
• Crew Protection: Safety features designed to protect the crew, such as guardrails, bulwarks, and gangways, are inspected for damage or deterioration and proper functionality.
• Hull Structure: The hull itself is inspected for any damage, corrosion, or structural weaknesses that could compromise watertightness or strength. This often includes visual inspection for cracks, buckling, indentation, and paint adhesion. Bottom shell, bilge keel, stem and stern frames, rudder, sea chests, side ports, stern bearing, and propeller are all checked.
• Other Systems: Depending on the scope of repairs, other systems may be examined, including but not limited to: pressure-vacuum valves, sounding pipes, air vents, access hatches, ventilation fans, dampers, weathertight doors and sealings, door securing arrangements, side scuttles, windows, and skylights. Testing, such as hose tests (to check watertight integrity), might also be conducted.