Esquimalt Graving Dock Regulations (SOR/89-332)

32 (1) No vessel shall enter or leave the dry dock if the temperature at the dry dock is below 0°C unless the caissons and related equipment have been heated and the keel and bilge blocks have been secured in accordance with subsection 31(2).

(2) The agent shall, within seven days after the vessel leaves the dry dock, replace any keel or bilge blocks that have been carried away by the vessel, whether or not those blocks were secured in accordance with subsection 31(2).