| Manufactor Serial Number | Type | Serial / Registration Number | Owner | Fate |
| XP-1 | Martin XP6M-1 Seamaster (275) | 138821 | United States Navy (Inc Marines) | |
| YP-1 | Martin YP6M-1 Seamaster (275) | 143822 | United States Navy (Inc Marines) | |
| XP-2 | Martin XP6M-1 Seamaster (275) | 138822 | United States Navy (Inc Marines) | |
| YP-2 | Martin YP6M-1 Seamaster (275) | 143823 | United States Navy (Inc Marines) | |
| YP-3 | Martin YP6M-1 Seamaster (275) | 143824 | United States Navy (Inc Marines) | |
| YP-4 | Martin YP6M-1 Seamaster (275) | 143825 | United States Navy (Inc Marines) | |
| YP-5 | Martin YP6M-1 Seamaster (275) | 143826 | United States Navy (Inc Marines) | |
| YP-6 | Martin YP6M-1 Seamaster (275) | 143827 | United States Navy (Inc Marines) | |
| P-7 | Martin P6M-1 Seamaster (275) | 145876 | United States Navy (Inc Marines) | |
| P-8 | Martin P6M-1 Seamaster (275) | 145877 | United States Navy (Inc Marines) | |
| P-9 | Martin P6M-1 Seamaster (275) | 145878 | United States Navy (Inc Marines) | |
| P-10 | Martin P6M-1 Seamaster (275) | 145879 | United States Navy (Inc Marines) | |
| P-11 | Martin P6M-1 Seamaster (275) | 145880 | United States Navy (Inc Marines) | |
| P-12 | Martin P6M-1 Seamaster (275) | 145881 | United States Navy (Inc Marines) | |
| P-13 | Martin P6M-1 Seamaster (275) | 145882 | United States Navy (Inc Marines) | |
| P-14 | Martin P6M-1 Seamaster (275) | 145883 | United States Navy (Inc Marines) | |
| P-15 | Martin P6M-1 Seamaster (275) | 145884 | United States Navy (Inc Marines) | Not Built |
| P-16 | Martin P6M-1 Seamaster (275) | 145885 | United States Navy (Inc Marines) | Not Built |
| P-17 | Martin P6M-1 Seamaster (275) | 145886 | United States Navy (Inc Marines) | Not Built |
| P-18 | Martin P6M-1 Seamaster (275) | 145887 | United States Navy (Inc Marines) | Not Built |
| P-19 | Martin P6M-1 Seamaster (275) | 145888 | United States Navy (Inc Marines) | Not Built |
| P-20 | Martin P6M-1 Seamaster (275) | 145889 | United States Navy (Inc Marines) | Not Built |
| P-21 | Martin P6M-1 Seamaster (275) | 145890 | United States Navy (Inc Marines) | Not Built |
| P-22 | Martin P6M-1 Seamaster (275) | 145891 | United States Navy (Inc Marines) | Not Built |
| P-23 | Martin P6M-1 Seamaster (275) | 145892 | United States Navy (Inc Marines) | Not Built |
| P-24 | Martin P6M-1 Seamaster (275) | 145893 | United States Navy (Inc Marines) | Not Built |
| P-25 | Martin P6M-1 Seamaster (275) | 145894 | United States Navy (Inc Marines) | Not Built |
| P-26 | Martin P6M-1 Seamaster (275) | 145895 | United States Navy (Inc Marines) | Not Built |
| P-27 | Martin P6M-1 Seamaster (275) | 145896 | United States Navy (Inc Marines) | Not Built |
| P-28 | Martin P6M-1 Seamaster (275) | 145897 | United States Navy (Inc Marines) | Not Built |
| P-29 | Martin P6M-1 Seamaster (275) | 145898 | United States Navy (Inc Marines) | Not Built |
| P-30 | Martin P6M-1 Seamaster (275) | 145899 | United States Navy (Inc Marines) | Not Built |