This category contains Marine Technical Articles
What is Metal-locking? Metal-lock or metal stitching is a method of repairing fractures to castings, onsite without the use of heat. It involves sinking Metal-lock keys, perpendicular to a fracture. The fracture is then sealed and held rigid by Metal-lace studs. The result is a repair that is sealed tight and flush with the surface,…
Boiler basics and types of boilers | Common issues found on Boiler feed water | Boiler water treatment fundamentals | Water Treatment Philosophy and Overview | BOILER BASICS AND TYPES OF BOILERS – WATER TUBE BOILER AND FIRE TUBE BOILER What is a boiler? A boiler is a steel pressure vessel in which water under pressure is converted into steam…
Boiler basics and types of boilers | Common issues found on Boiler feed water | Boiler water treatment fundamentals | Water Treatment Philosophy and Overview | Common issues found on Boiler feed water Feed water produced by distillation for use in a boiler is not “pure”, even with a good distillation method. Worse still is ordinary water taken from…
Boiler basics and types of boilers | Common issues found on Boiler feed water | Boiler water treatment fundamentals | Water Treatment Philosophy and Overview | BOILER WATER TREATMENT FUNDAMENTALS The concept of employing water, fresh or distilled, as a power generating source and heat exchange medium originated and was realised with the inception of the steam generator or boiler, and…
Boiler basics and types of boilers | Common issues found on Boiler feed water | Boiler water treatment fundamentals | Water Treatment Philosophy and Overview | Water Treatment Philosophy and Overview 1 .TYPES OF WATER General Water could generally be described as the most important of all chemical substances. Its chemical designation is H2O; the water molecule is composed of 2…
Boiler Easing Gear Boiler basics and types of boilers | Common issues found on Boiler feed water | Boiler water treatment fundamentals | Water Treatment Philosophy and Overview | 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…
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…
