Type 744 buoy tender
Type 744 buoy tender and its derivatives with the NATO reporting name Yannan (延南) class is a class of Chinese buoy tender that is in service with the People's Liberation Army Navy (PLAN) and Chinese civilian governmental establishments. It is a boat or vessel which services and replaces buoys.
Type 744 derived from the Type 985 buoy tender, the first purpose built buoy tender in the Chinese inventory. Type 985 is designed to be the replacement of earlier buoy tenders converted from former US Navy net laying ships. In the early 1980s, maritime navigational responsibility was transferred from PLAN to Ministry of Transport of the People's Republic of China (MOT). Type 985 was among the equipment transferred from PLAN to MOT and has remained in civilian service since.
Type 744 employs design modifications based on the experience with earlier ships. Type 744 is designed by the 708th Institute of China State Shipbuilding Corporation. The 708th Institute is more commonly known as China Shipbuilding and Oceanic Engineering Design Academy. Construction began in December 1979 and four were completed, with the last ship entering service in May 1981. The most obvious external visual difference between Types 744 and 994 is that the former lacks the mast in the bow. Type 744 buoy tenders were not transferred from military to civilian authorities, and remained in PLAN service. The ship received NATO reporting name as Yannan (延南) class. Specification:
In January 2017, Type 744A, an improved version of Type 744 entered Chinese service, replacing earlier Type 744 No Dongbiao 263, which retired from Chinese Navy on August 1, 2015 and transferred to civilian service. This latest (as of 2017) buoy tender of Chinese navy is similar in size in comparison to earlier models, but automation is greatly enhanced. Type 744A is capable of performing designed tasks under sea state 3 and safely navigation in sea state 5. However, there are disagreement over the type designation of this ship in that according to Chinese type designation convention, improved versions of existing types are followed by either A or G, and new design would receive a different number. Although the ship is an improvement of earlier Type 744, some Chinese media claims that the designation is Type 944A instead, but there is known official confirmation of Type 944 from China.
Buoy tender fleet
|Type||Builder||Commissioned||Status||Pennant #||Displacement (t)||Length (m)|
|985||Jiangnan Shipyard Co., Ltd||1966||Active in civilian service||Haibiao (海标) 624||1120||65.22|
|994||Active in civilian service||1750||72.35|
|744||Jiangnan Shipyard Co., Ltd||Dec 6, 1980||East Sea Fleet||Dongbiao (东标) 263||1750||72.35|
|744||Jiangnan Shipyard Co., Ltd||Dec 14, 1980||South Sea Fleet||Nanbiao (南标) 463||1750||72.35|
|744||Jiangnan Shipyard Co., Ltd||Mar 1981||North Sea Fleet||Beibiao (北标) 982||1750||72.35|
|744||Jiangnan Shipyard Co., Ltd||May 1981||North Sea Fleet||Beibiao (北标) 983||1750||72.35|
|744A||Jiangnan Shipyard Co., Ltd||January 23, 2017||East Sea Fleet||Dongbiao (东标) 265||1750||72.35|