- 1. Deck Area
• Wire & mooring line covering by tarpaulin / canvas.
• Hand turn of lifeboat, davit swing & engine test run.
• Winches & windlass free load turn2. Automation device
The equipment containing printed circuit boards are kept dry and free of moisture, and excessive temperatures are avoided. The electric supply systems in modern ships built
Electrical apparatus on deck should be covered and sealed with desiccant bags inside to absorb moisture. Bags should be changed/reactivated at the manufacturer’s recommended intervals. Heaters should be distributed throughout the machinery space to maintain reasonable temperatures and prevent condensation. Electric motors, starters, switchboards, control equipment, etc must be provided with heating arrangements. (If all electrical areas are covered by dehumidifiers then the extent of heating may be reduced). Deck electrical apparatus should be covered and sealed containing desiccant bags3. Accommodation
Personnel living onboard should be accommodated in one area to allow all other areas to be dehumidified, or at least provided with heaters, to reduce humidity to an acceptable level. If the ships galley is being used by lay-up staff, the galley exhaust fans and grease trap should be regularly inspected and cleaned. For all unoccupied areas, the humidity level in accommodation areas should be reduced and maintained at 45-55% relative humidity (RH) by dehumidifiers. This is particularly important for spaces such as the radio room, navigation bridge and other spaces housing electrical machinery or electronic control equipment. Ships linen and napery should be stored in one single dry compartment with mattresses stowed on their edge to assist free air circulation.4. Engine and machinery
• Preservation of engine room machinery.
• Water intergrity5. Electrical system and navigation gear
Installation DH unit and the humidity level should be reduced and maintained at 45-55% relative humidity (RH) by dehumidifiers. This is particularly important for spaces such as the radio room, navigation bridge and other spaces housing electrical machinery or electronic control equipment6. Compressor room
• Preservation of machinery
7. Internal hull
Hold, cargo tanks and other hatch covers, watertight doors and closing appliances should be
securely closed and sealed, unless required for access or ventilation. Flame screens on fuel tank
air pipes should be in good condition.
Empty tanks, hold, pump rooms, small machinery spaces, storage spaces, lockers and other
similar areas should be kept in a dry condition. For this purpose, dehumidification is
recommended but the extent of its use is dependent upon the type of ship, its condition, the
lay-up location and the climatic conditions.
Fuel oil bunker tanks should be kept full or should be cleaned and gas freed. When kept full a
regular check for liquid loss should be made. A biocide may be added to the fuel to prevent
microbiological degradation; specialists should be consulted to assess any adverse side effects.
Fresh water tanks should be cleaned and recoated where necessary.
Chain lockers should be cleaned, dried and coated
8. Cargo handling area
• Cargo hold and / or tanks & inter barrier.
• Tanks preservation.
9. External hull
• Installing anodes on wires around the vessel to protect hull
10. Anchor chain system
• Installing a swivel on anchor chain
above waterline to prevent kinking.
• Tri-monthly anchor chain maintenance.