Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Date | B-52 Model | Serial # | Unit | Bomb Capacity | Mission/Target | Cause of Loss |
| --- | --- | --- | --- | --- | --- | --- |
| 6/18/65 | B-52F | 57-0179 | 441st BS, 7th BW | Same | Same | Same |
| 7/07/67 | B-52D | 56-0627 | 454th BW attached to 4133rd BW (P) | Same | Same | Same |
| 7/08/67 | B-52D | 56-0601 | 22nd BW attached to 4133rd BW (P) | Same | Unknown target; Arc Light Mission | Engine failure, crashed on take off. |
| 7/19/69 | B-52D | 55-0676 | 70th BW attached to 4133rd BW (P) | Same | Same | Nose gear failed, crashed on take off. |
| 7/27/69 | B-52D | 56-0630 | 70th BW attached to 4133rd BW (P) | Same | Same | Structure failure, starboard; crashed on take off. |
| 7/08/72 | B-52G | 59-2600 | 72nd SW (P) | 27 500lb GP H-E bombs | Same | Mechanical failure, crashed en route to target. |
| 7/30/72 | B-52D | 56-0677 | 307th SW | 108 GP H-E bombs | Arc Light Mission | Struck by Lightning , crashed en route to target. |
| 11/18, 19/72 | B-52G | 58-0246 | 2nd BW attached to 72nd SW (P) | Same | Linebacker II Offensive, same targets | Hit by SAM at 38,500 feet just after bomb release |
| 11/18, 19/72 | B-52D | 56-0608 | 99th BW attached to 307th SW | 108 GP H-E bombs | Linebacker II Offensive, same targets | Hit by SAM at 38,000 feet just after bomb release. |
| 12/20, 21/72 | B-52G | 57-6496 | 456th BW attached to 72nd SW (P) | 27 GP H-E bombs | Linebacker II Offensive, same targets | Hit by SAM just after bomb release. |
| 12/20, 21/72 | B-52D | 56-0669 | 306th BW attached to 43rd BW | Same | Gia Lam rail road; Linebacker II Offensive | Hit by SAM after bomb release |
| 12/20,21/72 | B-52G | 58-0169 | 97th BW attached to 72nd SW (P) | Same | Same target; Linebacker II Offensive | Hit by SAM |
| 12/21, 22/72 | B-52D | 55-0050 | 7th BW attached to 307th SW | Same | Same target/Linebacker II Offensive | Hit by SAM after bomb release |
| 12/26, 27/72 | B-52D | 56-0674 | 449th BW attached to 307th SW | Same | Giap Nhi rail road/Linebacker II Offensive | Hit by SAM |
| 12/26, 28/72 | B-52D | 56-0584 | 22nd BW attached to 307th | Same | Kinh No rail road/Linebacker II Offensive | Hit by SAM after bomb release |
| 12/27, 28/72 | B-52D | 56-0605 | 7th BW attached to 43rd SW | Same | Rail roads near Hanoi | Hit by SAM at 25,000 feet prior to bomb release. |
| 01/3, 4/73 | B-52D | 55-0056 | 307th SW | Same | Vinh Raid, North Vietnam | Hit by SAM during bomb release. |
Question:
When 441st bs, 7th bw is the unit what is the b-52 model?
Answer:
B-52F