When navigating in narrow channels the systems of water flow and water pressure will be considerably increased. The ship will thus push water ahead of her and the surface of the water will rise noticeably several ship's lengths ahead of the ship.Along the ship's side, water will flow back with higher velocity than in open water of the same depth and abaft of the ship, water will be pulled along in the direction the ship is sailing.If the ship sails in the centre line of the channel and if the channel is symmetrical about her she will not be exposed to a turning effect from the channel, … [Read more...]
Archives for October 2017
Hot Work – Definition, Responsibility, Process and Risks On-board Ships
Definition Work involving sources of ignition or temperatures sufficiently high to cause the ignition of a flammable gas mixture is termed as Hot Work. This includes any work requiring the use of welding, burning or soldering equipment, blow torches, some power-driven tools, portable electrical equipment which is not intrinsically safe or contained within an approved explosion-proof housing, and internal combustion engines. Hot Work Permit A document issued by a Responsible Person permitting specific Hot Work to be done during a particular time interval in a defined area. The SMS should … [Read more...]