Question 550 Deck General

The correct answer is C) To provide ventilation and drainage for cargo. Dunnage refers to the materials used to line the bottom and sides of a ship's cargo hold. The main purpose of dunnage is to allow for proper airflow and drainage around the cargo, preventing damage from moisture and condensation. By creating air gaps between the cargo and the ship's structure, dunnage facilitates the circulation of air and drainage of any liquids, which is essential for preserving the quality and integrity of the transported goods. The other answer choices are incorrect because: A) Dunnage is not used as ballast, B) Dunnage does not directly support bulkheads, and D) Dunnage is not used to secure tarpaulins, which have a separate purpose.