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…
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…
ISM code and certificates under ISM code ISM code certificates under ISM code – ISM Code applies to all passenger vessels and other vessels of 500 GT and above. The Directorate General of Shipping (For indian ship, Others by respective flag state) issues certification under ISM Code for Indian flag vessels on satisfactory verification of…
ROTARY VANE STEERING GEAR – Rotary vane steering gear is usually fitted with 3 fixed vanes and 3 moving vanes and can turn to 700 of total rudder movement i.e 350 on each side. – Three fixed and three moving vanes are usual and permit a total rudder angle of 70’, i.e. 35° in…
LIST OF VARIOUS STATUTORY CERTIFICATES & DOCUMENTS TO BE CARRIED ON BOARD SHIPS. CERTIFICATES TO BE CARRIED VALIDITY OF CERTIFICATES CONVENTION SURVEY ISSUANCE Cargo Ships Foreign going (all in original) International Tonnage Certificate (1969) Valid for lifetime unless major change in construction. International Tonnage Convention 1969 Surveyed by Class, measurements are taken, computed. Issued by…
ARRANGEMENT OF DOUBLE BOTTOM & FRAMING IN MACHINERY SPACE – ARRANGEMENT OF DOUBLE BOTTOM & FRAMING IN MACHINERY SPACE – A double bottom in a ship is a ship hull construction method where the bottom of the ship has two distinct layers of watertight hull floor where one of the outer layer forming the normal…
9 LITRES FOAM FIRE EXTINGUISHERS (Chemical Foam) Foam is an effective smothering agent, used for liquid fires mainly. It acts by flowing over the liquid fuel oil surface and isolating the fire from the air, also prevents re-ignition due to the foam stability. Usually the foams are of i. Protein Based ii. Synthetic …
