# SD Unión Club

Sociedad Deportiva Unión Club de El Astillero was a Spanish football club based in El Astillero, in the autonomous community of Cantabria. Founded in 1922, the club plays in Segunda Regional – Group B.

## History

Founded in 1922 after the merger of three clubs in the city: Astillero FC, Selección and SIGVA, Unión Club ceased activities in 1936 due to the imminency of the Spanish Civil War, only returning in 1945. They first reached the Tercera División in 1960.
In the 1987–88 season, the club finished in the first position of their group, but gave up promotion to Segunda División B. In January 2021, the club was expelled from their group of the Segunda Regional de Cantabria, being unable to play in the 2021–22 season.
In August 2024, Unión returned to an active status.

## Season to season

| Season | Tier | Division | Place |
| 1928–29 | 4 | 1ª Reg. | 4th |
| 1929–30 | 5 | 2ª Reg. | 1st |
| 1930–31 | 4 | 1ª Reg. | 3rd |
| 1931–32 | 5 | 2ª Reg. | 4th |
| 1932–33 | 5 | 2ª Reg. | 5th |
| 1933–34 | 5 | 2ª Reg. | 6th |
| 1934–35 | 6 | 3ª Reg. P. | 1st |
| 1935–36 | 5 | 2ª Reg. | 1st |
| 1936–1945 | DNP | DNP | DNP |
| 1945–46 | 5 | 2ª Reg. | 2nd |
| 1946–47 | 4 | 1ª Reg. | 3rd |
| 1947–48 | 4 | 1ª Reg. | 3rd |
| 1948–49 | 4 | 1ª Reg. | 9th |
| 1949–50 | 4 | 1ª Reg. | 7th |
| 1950–51 | 4 | 1ª Reg. | 10th |
| 1951–52 | 4 | 1ª Reg. | 7th |
| 1952–53 | 4 | 1ª Reg. | 8th |
| 1953–54 | 4 | 1ª Reg. | 8th |
| 1954–55 | 4 | 1ª Reg. | 6th |
| 1955–56 | 4 | 1ª Reg. | 5th |
| Season | Tier | Division | Place | Copa del Rey |
| 1956–57 | 4 | 1ª Reg. | 2nd | |
| 1957–58 | 4 | 1ª Reg. | 2nd | |
| 1958–59 | 4 | 1ª Reg. | 3rd | |
| 1959–60 | 4 | 1ª Reg. | 1st | |
| 1960–61 | 3 | 3ª | 13th | |
| 1961–62 | 4 | 1ª Reg. | 3rd | |
| 1962–63 | 4 | 1ª Reg. | 1st | |
| 1963–64 | 3 | 3ª | 13th | |
| 1964–65 | 3 | 3ª | 3rd | |
| 1965–66 | 3 | 3ª | 8th | |
| 1966–67 | 3 | 3ª | 14th | |
| 1967–68 | 4 | 1ª Reg. | 3rd | |
| 1968–69 | 4 | 1ª Reg. | 2nd | |
| 1969–70 | 4 | 1ª Reg. | 5th | |
| 1970–71 | 4 | 1ª Reg. | 1st | |
| 1971–72 | 3 | 3ª | 18th | First round |
| 1972–73 | 4 | 1ª Reg. | 6th | |
| 1973–74 | 4 | 1ª Reg. | 1st | |
| 1974–75 | 3 | 3ª | 20th | First round |
| 1975–76 | 4 | Reg. Pref. | 3rd | |
| Season | Tier | Division | Place | Copa del Rey |
| 1976–77 | 4 | Reg. Pref. | 8th | |
| 1977–78 | 5 | Reg. Pref. | 7th | |
| 1978–79 | 5 | Reg. Pref. | 8th | |
| 1979–80 | 5 | Reg. Pref. | 3rd | |
| 1980–81 | 4 | 3ª | 15th | |
| 1981–82 | 4 | 3ª | 16th | |
| 1982–83 | 4 | 3ª | 10th | |
| 1983–84 | 4 | 3ª | 19th | |
| 1984–85 | 5 | Reg. Pref. | 1st | |
| 1985–86 | 5 | Reg. Pref. | 1st | |
| 1986–87 | 4 | 3ª | 4th | |
| 1987–88 | 4 | 3ª | 1st | First round |
| 1988–89 | 4 | 3ª | 6th | |
| 1989–90 | 4 | 3ª | 18th | |
| 1990–91 | 5 | Reg. Pref. | 2nd | |
| 1991–92 | 4 | 3ª | 12th | |
| 1992–93 | 4 | 3ª | 12th | |
| 1993–94 | 4 | 3ª | 9th | |
| 1994–95 | 4 | 3ª | 11th | |
| 1995–96 | 4 | 3ª | 17th | |
| Season | Tier | Division | Place |
| 1996–97 | 4 | 3ª | 17th |
| 1997–98 | 4 | 3ª | 11th |
| 1998–99 | 4 | 3ª | 17th |
| 1999–2000 | 5 | Reg. Pref. | 16th |
| 2000–01 | 6 | 1ª Reg. | 3rd |
| 2001–02 | 6 | 1ª Reg. | 2nd |
| 2002–03 | 5 | Reg. Pref. | 5th |
| 2003–04 | 5 | Reg. Pref. | 10th |
| 2004–05 | 5 | Reg. Pref. | 12th |
| 2005–06 | 5 | Reg. Pref. | 13th |
| 2006–07 | 5 | Reg. Pref. | 18th |
| 2007–08 | 6 | 1ª Reg. | 5th |
| 2008–09 | 5 | Reg. Pref. | 11th |
| 2009–10 | 5 | Reg. Pref. | 13th |
| 2010–11 | 5 | Reg. Pref. | 16th |
| 2011–12 | 6 | 1ª Reg. | 16th |
| 2012–13 | 7 | 2ª Reg. | 5th |
| 2013–14 | 7 | 2ª Reg. | 1st |
| 2014–15 | 6 | 1ª Reg. | 17th |
| 2015–16 | 7 | 2ª Reg. | 17th |
| Season | Tier | Division | Place |
| 2016–17 | 7 | 2ª Reg. | 9th |
| 2017–18 | 7 | 2ª Reg. | 9th |
| 2018–19 | 7 | 2ª Reg. | 4th |
| 2019–20 | 7 | 2ª Reg. | 8th |
| 2020–21 | 7 | 2ª Reg. | (R) |
| 2021–22 | DNP | DNP | DNP |
| 2022–23 | DNP | DNP | DNP |
| 2023–24 | DNP | DNP | DNP |
| 2024–25 | 8 | 2ª Reg. | |
* 23 seasons in Tercera División