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Shipyard is a specialized facility equipped with various tools to support the process of building, repairing and maintaining ships. There are several types of variant ships, such as military ships, tourist boats, cargo ships and passenger ships. Apart from being a place for shipbuilding, shipyards are utilized to conduct several activities, such as ship design, equipment installation, plate installation, feasibility tests and classifications. There are many production activities and production flows that allow for potential waste problems that have an impact on labor usage, product quality, costs, and production time. The aim of this research is to identify waste in shipbuilding production lines through a lean manufacturing approach. The lean manufacturing approach is one of the ways in shipyards to observe the level of waste in the production process, so that it can reduce unnecessary activities in the production process which can increase production efficiency and effectiveness. This study approach begins with the identification of waste in the production line through mapping on each line so that activities that have no added value are identified. Based on the results of identification using the waste assessment model (WAM) method which consists of a waste relationship matrix (WRM) and a waste assessment questionnaire (WAQ), waste is obtained namely inventory (27,20%), overproduction (20.24%), defective products (20.04%), motion (12.47%), transportation (9.23%), waiting time (7.46%) and process (3.37%). [ABSTRACT FROM AUTHOR]

Traditional ships are currently experiencing a significant demand in proportion to the increasing number of fishermen using traditional boats in West Aceh District, Indonesia. However, shipbuilders experienced many obstacles during the manufacturing process, therefore the quality of the ships produced was not in accordance with the standards or the demand of the ship owners. Imperfections in the form of defects on the ship are often found when the ship has been completed. The purpose of this study is to solve the problem of defects that occur in the traditional shipbuilding process in Aceh Barat District, Indonesia. Solving these problems is expected to improve the quality of the ships produced. The initial identification process using Failure Mode and Effect Analysis (FMEA) will be carried out to determine potential defects that can affect the quality of the ship. Defects that pose a high risk to the quality of the ship were resolved using a Logic Tree Analysis (LTA) in order to obtain recommendations for improvements. Based from the results, four risks of damage have been identified that affect the quality of the traditional ships produced, namely; the selection of the quality of raw materials, imperfect wooden joints, easily corroded steel bolts, and poor installation of additional equipment. There are several actions that can be used, among others; replacement of damaged components, reconnection, hot dipped galvanized bolt replacement, and repair the installation of additional equipment. [ABSTRACT FROM AUTHOR]