Since the beginning of 2020, a new crown epidemic has exploded in China and even the world, and people all over the world have devoted themselves to this unprecedented war of epidemic.
During this period, typhoon seemed to be very cooperative and had not visited it for a long time (Typhoon No. 1 in 2019 was generated in January), and the shipping industry was able to devote itself to this anti-epidemic war.
However, as of May, the typhoon seemed to be unable to hold back and was gathering and brewing in the Philippine waters...
▲The dynamic cloud map of typhoon embryos over the southeastern seas of the Philippines monitored on May 11
[Typhoon No. 1, 2020, " Wasp " may be generated today]
On May 11, the Tokyo Typhoon Center in Japan released a message of generating a tropical low pressure, upgrading the tropical disturbance 95W above the southeastern seas of the Philippines to tropical low pressure.
Today (May 12), the Japan Meteorological Agency maintained a low pressure rating for typhoon embryos of 95W, and the US JTWC also gave a tropical low pressure. The current shape is becoming more and more decent, the sea temperature conditions are very good, and the vertical wind shear is weak. These conditions are conducive to development and enhancement. should be numbered to be upgraded to Typhoon No. 1 "Wasp".
▲Predict on the path of moving the typhoon embryo 95W in the next 5 days.
▲ NCEP-GFS global model predicts the near-ground wind and sea level aerodynamics in the next 5 days in the Northwest Pacific.
Typhoon embryo 95W was first detected on May 6 and has developed rapidly since then.
On May 10, the United States Joint Typhoon Warning Center issued a typhoon formation alarm (TCFA). On the same day, the Hong Kong Observatory upgraded it to a tropical low pressure and issued a typhoon forecast; on May 11, the Japan Meteorological Agency issued a strong wind warning to it, pointing out that the center of the tropical low pressure of 95W in the eastern Philippines is located at 8.5° north latitude and 129.0° east longitude, the maximum wind speed near the center is 15 meters/sec, and the minimum pressure of the center is 1006 hPa, which may be strengthened to Typhoon No. 1 within 24 hours.
Today, according to the detection and predictions of all parties, the typhoon embryo 95W should be numbered to Typhoon Wasp today.
On May 11, JTWC issued a typhoon formation alarm (TCFA) to 95W
According to the satellite cloud animation, the embryo of Typhoon No. 1 "Waters" this year is currently located on the east side of Mindanao Island, Philippines. Its "engine" has been started: at the bottom, a large number of cumulus clouds are rotating around a clear center; at the same time, the high-rise cloud system is expanding outward in a ray-like manner.
0 On the afternoon of May 11, the development of typhoon embryos of 95W was produced by Alice and Alice. The future typhoon No. 1 is clear. The path trend is relatively clear:
that is to accept the guidance of the secondary high, take a parabola on the west side of the secondary high, first northwest and then northeast and turn.
First approach Philippine Islands
Then cross the Philippines Islands to enter the South China Sea
There is a possibility of approaching the coastal areas of Guangdong, Fujian and Taiwan
ECMWF set analysis of 95W, Zhongqiai Ai made
The later path given by the US collection forecast is to go north along the Philippine Islands, and then turn to the northeast. Before and after the typhoon turned, it was the time window for the North Indian Ocean westerly to enter the Pacific Ocean. If there is no typhoon, the South China Sea will gradually turn into southwest wind, but the speed may be slow and the process will be repeated; but under the traction of the typhoon, the "water pump", the South China Sea may quickly turn into southwest wind around May 18. In other words, the South China Sea summer monsoon may explode in full swing around May 18.
or above typhoon meteorological content is based on typhoon detection and comprehensive reorganization of Chinese meteorological enthusiasts
, then it is safe. Since Typhoon No. 1 "Hornets" in 2020 is coming, the crew members must be prepared to "anti-Taiwan and fight the epidemic", not only to prevent the invasion of the new coronavirus, but also to prevent being stung by "Hornets".
After receiving the storm alarm, crew members should mainly prepare from the following aspects:
1. Effectively utilize the available information
storm and low air pressure are formed by changes in pressure and temperature. Crews can obtain seasonal regional and maritime safety information through various methods such as regional enhancement group call, navigation safety guidelines, world marine routes, etc.Therefore, if you can obtain information about severe weather on the expected route from the information, you can plan an alternative route in advance.
2. Research weather report
Usually weather forecasts and weather faxes will give reminders on unstable weather conditions. Therefore, careful selection of navigation areas and their weather forecasts by the driver helps to obtain storm forecasts. Weather reports can be determined through frequent observations of various meteorological instruments and on board weather.
3. Stay away from the storm center
Once the storm or low pressure is determined, it is crucial to determine the distance between the ship and the trajectory and path of the storm storm eye , low pressure center and storm. In the Northern Hemisphere, face the wind and place the typhoon center at 90-135 degrees to the right of your boat, and the Southern Hemisphere is on the left. It is wise to keep a distance of at least 250 miles (217 nautical miles) from the storm eye, but some companies will specify the specific safety distance in their safety management manuals.
4. Strict inspection of ship stability
ship stability and whether it meets the complete stability standards is necessary. Before sailing, the ship's broken compartment stability conditions must be evaluated to ensure that the ship meets the requirements for broken compartment stability. Ships can load ballast water when they travel through bad weather. The ship can thus obtain additional stability, and by increasing the ballast, the height of the ship's center of gravity can be reduced, thereby improving the height of the ship's stability.
5. Use ballast tank to reduce the influence of the free surface
As part of good navigation technology, increase the ballast water level and keep the liquid level stable, which can reduce the impact of the free liquid level. It can also be used to increase stability height. Good cargo loading plans and ballast plans can minimize the number of ballast tanks with half or underload.
6. Be careful when changing the speed, angle and direction
Usually waves formed by storms or low air pressure will reduce the stability of the ship, which will lead to the overturning of the ship or the shaking of the ship at a large angle. IMO Circular MSC1228 provides guidance on safe deceleration, angle changes and direction. Change the course and angle of encounter with the waves to adjust the encounter period with the waves and avoid synchronous rolling motion.
7. Ensure the safety of unfixed equipment/cargo on the deck
For ships with lower freeboards, the deck is the place with the highest frequency of impact from sea water. Therefore, in order to ensure that all equipment on the deck are not washed into the sea, additional ties must be tied up. The remaining ties should be used to ensure anchors, lifeboats, lifebuoys and liferafts.
8. Close watertight and weathertight import and export
Various watertight or weathertight openings such as side hatches, cargo canal covers, portholes, doors, manholes, etc. are kept closed to prevent any water from entering. Water leakage, unsealed gaskets, or unsecured doors or hatch covers, will be affected by the warehouse or living area. The status of watertight equipment such as watertight doors can be remotely monitored on the bridge, and their operation must be confirmed before starting.
9. Safety door of anti-collision bulkhead
It is particularly important to ensure that some watertight equipment in the bow anti-collision bulkhead, such as bow cabins, cargo warehouses, vents, etc., must be closed. These spaces generally store mooring equipment and some electric, hydraulic machines. The anchor chain hole cover must be secured in advance. The alarm of sewage wells is carried out routinely to obtain an alarm of water inlet earlier. Any watertight equipment that will cause water inlet must be kept off.
10. The drain must be kept unobstructed. All drains on the deck must be kept unobstructed to prevent water from accumulating on the deck.
11. Fixed antenna
All antennas must be fixed before the wind speed increases. The wind is strong enough to blow off or destroy the antenna. Storms are often accompanied by thunder and lightning, so all antennas must be kept grounded and all low insulation alarms must be carefully verified.
12. Check the host speed to avoid unstable host load
Because the unstable state of the ship will cause unstable host load. A carefully set host speed ensures that the load fluctuation energy of the ship host is within a permissible limit.
13. Notify all departments
in advance to notify all departments, deck department, turbine department and kitchen before the storm comes.Therefore, the deck, cabin, kitchen warehouse, infirmary, ward room, work area, etc. must be fixed and tied. Any major maintenance work, high-altitude operations, lifting heavy objects in the deck or cabin should be postponed or avoided.
(Marine Services Network)
