sea vesselsThere were many types of ships on the sea, with different functions and characteristics.
There were two ways to launch the ship, the sliding rail method and the dock water method. The sliding rail method was more common. After the construction of a large ship was completed, the fixing device was removed and the bottom was lifted to the slide that was covered with special grease. After the anti-slip device was removed, the ship entered the water by its own gravity. This method was divided into horizontal and vertical. Horizontal entry was more common, but in the vertical entry method, besides the grease, there were also steel balls, roller air bags, etc. However, this method was more suitable for ships with limited overall weight and not suitable for large ships. The dock flooding method was to open the dock to let water in after the construction was completed. Then, the ship would be lifted up by the buoyancy of the water, and then it would be driven out of the dock along the waterway.
In terms of ship management, there were strict rules for different sailing areas, such as river boats and sea boats. The bottom of the ship was flat and the draft was shallow. Most of the ships used a simple flat-bottom structure with both sides almost vertical. This structure increased the loading space but affected the stability. The manufacturing materials were mostly ordinary carbon steel, and the surface was sprayed with general anti-rust paint. Moreover, inland navigation mainly relied on visual and experience. The captain determined the course by observing the landmarks on both sides of the river and identifying the navigation route. The requirements for the inland river captain's navigation professional knowledge were relatively low. The ship's keels were deep in the water, and the bottom and sides were curved, effectively reducing the resistance of the sea. It could also maintain a relatively stable position in the wind and waves. The captain of the ship needed to be proficient in astronomical navigation, master meteorology knowledge, and many other professional knowledge. At least ten years of sailing experience and systematic professional training were needed to be competent. River ships would face many risks when entering the sea. For example, in 2018, the inland river cargo ship "Xiangxiang Yin Huo 0410" entered the sea. When it encountered strong turbulent weather, the ship was destroyed due to its design defects, lack of maritime navigation qualification, incomplete life-saving equipment, and communication equipment not suitable for the sea environment.
From the perspective of sovereignty-related incidents, in the waters of Huangyan Island in the South China Sea, ships from the philippines repeatedly intruded into China's territorial waters to provoke. For example, on December 4, 2024, the philippines sent coast guard ships 9701 and 4409 and official ships 3002 and 3003 to illegally intrude into the waters near Huangyan Island. Among them, official ship 3003 ignored the warning and deliberately made dangerous moves to deliberately collide with China's coast guard ship 3302. On August 25,2024, the philippine ship 3002 illegally intruded into the waters near Xianbin Reef in China's Spratly Islands and deliberately collided with China's coast guard ship 21551, which was normally in law enforcement, causing a collision. China's coast guard will control the provocative ships of the philippines in accordance with the law.
In addition, there were cruise ships like the Royal Caribbean Cruise. The interior facilities were like a small moving city on the sea. There were multi-storey buildings, many restaurants, and other facilities for tourists to entertain, rest, and eat.
The novel " Hundred Years of Spaceship " is equally exciting. Everyone is welcome to click and read it!
What's the matter with the small blood vessels in the lower body? What medicine do men use?There could be many reasons for a man to have small blood vessels in his lower body. If there is blood in the semen (hemosperm), you should seek medical examination in time to determine the cause of the disease and then carry out targeted treatment; If it is a foreskin that causes posthitis, it can be treated with Pikang cream. If the effect is not good and it is considered to be balanitis, it can be soaked with 1/5000 potassium Permanganate solution and applied with anti-inflammatory ointment. For allergic foreskin balanitis, oral anti-allergic drugs and pine ointment should be applied externally; If it is due to local Scrotal Skin Hypertrophy For the small blood vessels caused by acne of the Scrotum or Scrotum Folliculosa, they could be treated with local application of the Poly-Sulfonate Glucomannan Cream or Dexamethason Ointment for more than two to four weeks. At the same time, they could be treated with Chinese patent medicines such as Shiduqing capsules, Xueshuantong tablets, etc., which could clear away heat and promote dampness, and promote blood circulation and remove blood stasis. If it is suspected that a urine infection causes hematuria, you may need to go to the hospital to check your urine routine. After determining the cause, you can drink more water, eat less spicy food, take Azithromycin-infused medicine or intravenous infusion of Junbizhi, and supplement appropriate amounts of vitamins K and C. However, the specific medication and treatment should be carried out after the doctor's accurate diagnosis. It is not recommended to use the medication on their own.
<a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
the story is good, arouses our love for children and fathers, and grows our faith and believes in the destiny of Allah, good, like that., the spirit of aithor