Glossary
Terms & Glossaries of Shipping and Trading
Permanent Dunnage
Permanent dunnage is the strips of timber fixed to the frames of a ship to keep cargo away from the sides of the ship to avoid damage and condensation.
Permanent dunnage is the strips of timber fixed to the frames of a ship to keep cargo away from the sides of the ship to avoid damage and condensation. It is spar ceiling or cargo batten consists of timber of about 150mm x 50mm fitted over the ship's side frame or tank top.
Purpose to prevent packages of cargo protruding beyond the inner edges of the frames and so becoming damaged by moisture- IMPROVE Ventilation.
Tank top ceiling dunnage provide an air space and allow any leakage from cargo above to drain into the bilges.
