Boiler Easing Gear Why is it fitted? As per SOLAS chapter II-1 regulation 32 “Every steam boiler and every un-fired steam generator shall be provided with not less than 2 safety valves of adequate capacity. However, having regard to the output or any other features of any boiler or un-fired steam generator, the administration may…
SCOPE OF DRY-DOCKING SCOPE OF DRY-DOCKING, INSPECTION AND REPAIR TO BE CARRIED OUT (1) BOTTOM INSPECTION AND CORRECTIVE ACTION AS RECOMMENDED BY CLASSIFICATION SOCIETY SURVEYOR. SCOPE OF DRY-DOCKING, INSPECTION AND REPAIR TO BE CARRIED OUT. This is the first visit of the surveyor on the ship. This inspection is carried out as soon as…
SAFE STABILITY CONDITION TO BE PROVIDED DURING DOCKING When docking the ship the ship is slightly trimmed by the stern so that the stern block touches the stern frame first. This is necessary to steady the ship by locating the stern on the block. The stern side is chosen since the stern frame is…
VARIOUS SHIP PLANS REQUIRED BY SHIPYARD FOR DRY DOCKING VARIOUS SHIP PLANS REQUIRED FOR DRY DOCKING :- The following plans and drawings are required to be submitted to the shipyard for their use to enable the ship to be dry docked safely. To be submitted before ship enters dry dock (1) G.A. plan (a…
HOW TO PLAN BUDGET FOR DRY DOCKING DRY DOCK COSTING AND BUDGET The commercial operation of bulk carriers tankers and Container vessels follow a pattern of movement or transportation called world wide tramping whereby the ships have to sail in accordance to instructions and directives from charterers and the route programs are not fixed…
WHAT IS DRY DOCK? NECESSITY OF DRY DOCKING – BY A.K.RAMANUJAN Reasons for dry-docking? Dry dock dry docking necessity. The dry docking activity of cargo ships on a regular basis is a requirement for efficient and safe operation of ships and has two main objectives which are as follows :- To clean, scrub, prepare …
Withdrawal of Propeller shaft, survey and assembly propeller shaft Withdrawal,survey assembly propeller shaft Withdrawal,survey assembly .All large single screw ocean going ships have solid flanged propeller shafts, which necessitates the withdrawal of the shaft within the machinery The Rudder is ;positioned just behind the propeller and hence prevents the outward withdrawal of the shaft…
Ship Anchor – Complete Information Introduction The anchoring equipment of a ship comprises the anchor, anchor chain and the windlass. The anchoring equipment as required herewith is intended for temporary mooring of a ship within a harbour or sheltered area when the ship is awaiting berth, tide etc. The modern ship’s anchor is called ‘Stock-less …
Load Line Regulations INTRODUCTION The Load line regulations have a long history of over 140 years. They were introduced in the British parliament by Lord Plimsoll, in the year 1854 and finally passed in 1876 as the first merchant shipping Act. As per this Act all Merchant ships were required to have a Load line…
Why fly weights are driven at a higher rotational speed than the engine? * Fly weight equipped governors work on centrifugal force. The centrifugal force acts upwards and the spring force acts downwards. * This difference between the spring and the fly weights is called the governor effect, which is responsible for moving the pilot…
HIGH VOLTAGE SYSTEMS ON SHIPS Introduction As we all know usually the ship operates with a 3 phase. 60Hz. 440 Volts supply which is being generated and distributed on board. Every day the owners and designers aim for bigger ships for more profitability. As the ship size increases, there is a need to install more…
How watertightness of watertight bulkhead maintained where bulkheads are pierced by longitudinal beams or pipes. The watertight bulkheads are provided in the ship for the following purposes; Strength: provide major resistance to hogging, sagging, racking, water pressure etc. Separation – segregates incompatible cargoes and dissimilar compartments. Safety (fire) – provide main vertical zones for the…
