Directors (And Other Officers)
| Concept | 
                                    
                                        As at 2024-06-26  | 
                            
                                
                                    
                                        As at 2024-06-26  | 
                            
                                
                                    
                                        As at 2024-06-26  | 
                            
                                
                                    
                                        As at 2024-06-26  | 
                            
                                
                                    
                                        As at 2024-06-26  | 
                            
                                
                                    
                                        As at 2024-06-26  | 
                            
                                
                                    
                                        As at 2024-06-26  | 
                            
                                
                                    
                                        As at 2024-06-26  | 
                            
                                
                                    
                                        As at 2024-06-26  | 
                            
                                
                                    
                                        As at 2024-06-26  | 
                            
                                
                                    
                                        As at 2024-06-26  | 
                            
                                
                                    
                                        As at 2024-06-26  | 
                            
                        
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Directors (and other officers) | ||||||||||||
| Information about directors (and corporate auditors) | ||||||||||||
| Official title or position | 
                                        
                                             
                                                取締役兼常務執行役員船舶海洋事業部長兼生産業務本部担当
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                監査役
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                常勤監査役
                                                
                                             
                                        
                                     | 
                                
                                    — | 
                                        
                                             
                                                監査役
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                取締役
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                代表取締役専務社長補佐(全般)兼グループ新造船営業管掌兼鉄構事業部担当
                                                
                                             
                                        
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                                                代表取締役会長
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                取締役
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                取締役兼常務執行役員経営業務本部長兼東京事務所長
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                常勤監査役
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                代表取締役社長
                                                
                                             
                                        
                                     | 
                                
                            
| Name | 
                                        
                                             
                                                坂 田 貴 史
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                大 保 政 二
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                江 口 利 也
                                                
                                             
                                        
                                     | 
                                
                                    — | 
                                        
                                             
                                                吉 田 雅 昭
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                安 酸 庸 祐
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                間 渕 重 文
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                名 村 建 彦
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                古 川 芳 孝
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                向     周
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                松 本 好 生
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                名 村 建 介
                                                
                                             
                                        
                                     | 
                                
                            
| Date of birth | 
                                        
                                             
                                                1970-06-10
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                1965-07-05
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                1959-11-27
                                                
                                             
                                        
                                     | 
                                
                                    — | 
                                        
                                             
                                                1954-05-26
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                1957-12-26
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                1959-09-21
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                1941-01-05
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                1965-11-12
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                1969-12-11
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                1963-08-31
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                1973-06-15
                                                
                                             
                                        
                                     | 
                                
                            
| Career summary | — | |||||||||||
| Term of office | 
                                        
                                             
                                                (注)6
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                (注)7
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                (注)8
                                                
                                             
                                        
                                     | 
                                
                                    — | 
                                        
                                             
                                                (注)7
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                (注)6
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                (注)6
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                (注)5
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                (注)6
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                (注)5
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                (注)7
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                (注)5
                                                
                                             
                                        
                                     | 
                                
                            
| Number of shares held (Ordinary shares) | 
                                        
                                             
                                                3,760
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                7,556
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                466,924
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                14,127
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                329,784
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                16,239
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                4,900
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                90,558
                                                
                                                    
                                                        xbrli:shares
                                                    
                                                
                                             
                                        
                                     |