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:
| Name | Length | Tonnage | Built by | Year | Engines | Horsepowers | Former Names |
| --- | --- | --- | --- | --- | --- | --- | --- |
| American Dynasty | 272.0 Feet | 3471.0 | Mangone Shipyard, Houston, TX. | 1974.0 | 2, Bergen Diesel , BRM-8 | 8000.0 | Artabaze, Bure, Sea Bure |
| American Triumph | 285.0 Feet | 4294.0 | LS Baier &Co, Portland, OR. | 1961.0 | 2, Wärtsilä , 8R32D | 7939.0 | Acona |
| Northern Jaeger | 337 Feet | 3732.0 | Levingston Shipbuilding, Orange, TX. | 1969.0 | 2, MAK M453C | 6322.0 | Jaeger, Inagua Ranger II, Wisco Ranger |
| Northern Eagle | 344.1 Feet | 4437.0 | Ulstein Hatlo Norway. | 1966.0 | 2, Bergen Diesel , BRM-8 | 6590.0 | Mauna Kea, Hawaiian Princess |
| Northern Hawk | 310.1 Feet | 3732.0 | Brount Marine Corp, Warren, RI. | 1981.0 | 2, Bergen Diesel , BRM-8 | 8790.0 | State Trust |
| Ocean Rover | 223.0 Feet | 4345.0 | McDermott Shipyards, Amelia, LA. | 1973.0 | 3, Wärtsilä | 7080.0 | Enterprise |
| Katie Ann | 267.4 Feet | 1593.0 | Maryland Shipbuilding Co, Baltimore, MD. | 1969.0 | 1, Normo | 4497.0 | Royal Sea, Seafreeze Pacific |
Question:
How many Horsepowers have a Year smaller than 1974, and a Tonnage of 4437?
Answer:
6590.0