通告2对于航行于冰区事项（英文）

1、第 PAGE8 页 共 NUMPAGES8 页通告2对于航行于冰区事项（英文）SAFETY INSTRUCTION / NOTICE DHM-1002 21st Jan., 2022 To: The Masters Re: Basic Remendations for Winter NavigationRecently we have noted that some vessel encountered problem with ice accumulation on main deck and ship fittings frozen during winter navigation.We

2、hereby provide you below remendations to the Masters of our fleet ships while staying or navigation during the winter period of low air temperatures.Basic Remendations 1.If you navigate in the areas where sea Ice is e_pected, during the night it isremended to have a searchlight on continuously point

3、ed forward.From e_perience you will see small pieces of Ice in sufficient time to reduce speed and safely enter the ice.2.You may e_perience Freezing Spray or Severe Freezing spray.It is strongly remended to avoid Ice buildup aboard the vessel.Sometime it maybe necessary to reduce speed to bare mini

4、mum, but remember, you may loose 12 - 18 hours on your ETA, but youll avoid 2 - 3 days of clearing Ice in the harbour.In case of reducing shipbull;s speed is being necessary, Master is requested to report the situation to charterer to obtain Chartererbull;s approval.Freezing Spray is a very importan

5、t item.If possible all precautions should be taken to avoid Ice accumulation on the main deck.You should e_pect Freezing spray when wind is from NE, N, NW, WNW, W and with speed above 15 knots.The best way to avoid it is a course alternation or reduction of speed.Effects of freezing spray are dimini

6、shing when wind is more than 45 degrees from the bow.Any Course and speed change to be done in consultation with Charterer and our pany.3.During hours of darkness, watch Personnel must maintain frequent watch over the main deck area for the e_cessive Ice build up, if there is ice then appropriate av

7、oidance action must be taken.4.In case of severe spray (temperatures less than minus 15 and wind above 35 Knots) Master shall consider to anchor vessel at a safe anchorage to wait storm pass.5.All pipelines on the open decks must be empty and dry, this should be done prior entering cold weather.6.Ba

8、llast Valves (If not filled with water ) should be crack open to avoid freezing and damages, these should be at this position until arrival 7.Fire line, steam line should be empty and dry.8.Ballast tanks stripped as much as possible.(if vessel is loaded) 9.If in Ballast Condition ? All ballast tanks

9、 should not be pressed up and it is remended not to e_ceed 90PCT.Always consistent with the Minimum Ice draft per Class requirement.10.Fresh water tanks should not be filled more than 90 PCT to avoid e_pansion and damages if frozen.11.Additional heating should be provided to the Bridge to protect eq

10、uipment.12.Mooring lines should be kept inside and taken out only prior arrival at the dock.13.Mooring winches should be tested and run at least 3 - 4 hour prior arrival.14.Pilot ladder should be kept in protected area and deployed in last moment and only when pilot boarding.15.If vessel is operatin

11、g in Ballast condition, steam hose should be connected to Sea Suction intakes for Main Engine and Generators to avoid black-outs.16.Draught aft should be ma_imum as possible.Always consistent with Fwd Draft as per Class requirement.17.Prior arrival Pilot Station both anchors must be de-iced and move

12、d up and down IN GEAR to make sure they are free.18.Lifeboat Fresh Water if in containers to be placed in protected area to avoid freezing.19.Lifeboat Engines and Emergency Fire pump should be run rested and run on daily basis.20.If the vessel is not properly insulated, then acmodations fresh water

13、piping systems should be circulated to avoid freezing.21.Vessel should be supplied with wooden mallets and salt for Ice removal.22.Lifeboat Engines, Booster Pumps and e_posed generators should be drained of water.23.When Navigating in Ice soundings of empty tanks must be taken on frequent basis (6 H

14、ours or so).24.When the ship is in the port during the winter period under the negative ambient temperatures the Masters of the ships are remended: - Keep the holds or openings closed and the temperature inside above 00C whenever possible.- Holds are to be opened right before the beginning of cargo

15、operations and closed as soon as same are pleted or interrupted.- Steady monitoring of any changes in ships draft while under cargo operations as well as their careful analysis or coordination as per quantity of received or discharged cargoes.In case of any doubt in ice formation at the ship bottom,

16、 please report to pany immediately, diver inspection might to be arranged and possible measures for the ice eliminating at the ship bottom to be taken.- Vessel windlass, mooring equipments, crane and hatch cover operation to be very carefully especially while start motors.De-Icing Procedures: If the

17、 vessel is able to operate windlass, winches,bollards, lifesaving and fire equipment then small amount of ice in the focsle area is not an immediate concern.If the vessel unable to use above equipment due to frozen and iced up, then it is strongly remended to mence de-icing procedures; Providing wat

18、er temperature is more than 10 C and air temperature - 5C and above then the best method of de-icing is to use vessels deck foam applicators monitors and/or fire hoses to apply large amount of water in the affected area to get rid of ice.From e_perience water will not damage your equipment and been

19、proven the best method to remove ice.After ice is gone and prevailing conditions are such that equipment is still frozen and difficult to operate, then it is remended to steam for a final touch up.After pletion of de-icing procedures, all drains and valves on the fire/butherworth lines and drain on

20、the main deck should be open.For de-icing of small areas and when in e_treme cold weather then use of the wooden mallets to remove ice from valves, manifolds, windlass etc is remended.Great care must be taken to prevent any damages as a result of striking.Masterbull;s Checklist Master is requested t

21、o send confirmation report topany before the vessel enter an areas where sea Ice is e_pected.a.Request the most updated ice chart available, convoy formation point (CFP) location and names of the ice-breakers from your Agents in advance.b.Check that your VHF radio is operative, find out in advance t

22、he channel used by the ice-breakers operating in the area.c.Check that the pipes on deck are drained of water.d.Check that the sounding and air pipes of the ballast tanks are emptied of water.e.Check that anchor wheels and other equipment which may be used in ice conditions are covered by adequate tarpaulins (to prevent icing).f.Keep the pilot ladder in a sheltered place and, before use, make sure it is not ice covered.g.Test the searchlights in advance.h.Check that the pro