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Type 632 Fulin Class (Coastal Tanker)

The Fulin-class AOTL was a small transport oiler built at Shanghai Shipyard Hotong from March 1972 through September 1976. The Fulin, known as the "1000-ton oil tanker", was armed with two twin 25mm gun mounts, one on the forecastle deck and one aft of the stack. It has a light diesel load of 25,000 barrels. Designed as a type that is capable of transport both water and oil, these ships entered service from 1972 onward. Type 632 tanker has received NATO reporting name as Fulin class. After transferred to reserves, these ships begun to retire in the early 2010s.

Three of them were converted to civilian tankers. In order to expand transportation business and improve the economic efficiency of the economy, China continues to build such a 1000-ton oil tankers to operate the refined oil transportation between the ports along the coast of China. With the continuous development of reform and opening up, the business of North Oil and South Transportation has become increasingly busy. In order to meet the needs of the development of the market economy, the Chinese ship fuel supply system has successively transferred several 1000-ton class on the premise of ensuring oil supply operations in the ports of various coastal ports. Oil tankers are engaged in oil transportation business. However, due to the small loading capacity of these ships, new ships are costly. On the basis of existing ships, the task of increasing the fuel load of ships through appropriate technical reforms and saving the provinces is in front of the company's technical department.

At least 30 of these vessels were built and at least six units served as naval auxiliaries. Therefore, it is said that the military products and civilian products share a model or are modified on the basis of this model. This is to save development funds and construction period. Therefore, the integration of military and civilian has become the trend of the worlds navies. For example, a 1000-ton oil tanker in a naval tanker, the same type of tanker is a civilian 1000-ton steel small offshore oil tanker. She is characterized by a forward-dipping mast, a cruiser-shaped raft, and a stern type, which is 67.42 meters long and wide. 10.02 meters, model depth 4.5 meters, design draught 3.9 meters, full load draught 4.1 meters, total tons 823 tons, net tons 327 tons, load capacity 1440 tons, the main engine is a SKL 6NVD48A-2U diesel engine, power 735 kW, speed 10 knots The only difference between them is that the naval tanker installed a double-barrel 25mm gun on the front deck.

The ship navigation areas are coastal areas, carrying three-stage finished fuel oil that supplies diesel, fuel oil and barreled oil with a flash point greater than 60oC. It is single propeller, single rudder, with a total length of the ship of 66 m, the width is 10 m, and the draft is 4 m. Under the condition of 85% MCR of the host, the speed is 10.0kn. The ship is set up on the first floor with a half-rise and a raised tail deck. The cabin, accommodation and cab are all arranged at the rear. There is no special ballast tank.

These vessels have alarmingly low freeboard amidships - that is to say, there is not much height between the water and the deck level. The freeboard is the distance between the waterline and the deck. The lower the freeboard, the closer the deck is to the water. Thus, crew on low-freeboard ships are more vulnerable to waves washing over the deck and injuring or killing them, or damaging equipment. The secret sauce is that they are loaded with kerosene, which has a density slightly less than water, so the boats are nearly unsinkable. It will be recalled that the bathyscaphe "Trieste" used a dirigible-like float filled with aviation gasoline as a flotation device. Pure water at 4C (max. density) was chosen as the 'base line' for specific gravity and given the value of 1. Refined gasoline has a specific gravity of 0.737, while kerosene has a specific gravity of 0.817.

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Page last modified: 31-10-2019 16:38:42 ZULU