<Table> <Tr> <Th colspan="2"> Season </Th> <Th colspan="2"> Episodes </Th> <Th colspan="2"> Originally aired </Th> </Tr> <Tr> <Th> First aired </Th> <Th> Last aired </Th> </Tr> <Tr> <Td> </Td> <Td colspan="1"> </Td> <Td colspan="2"> 10 </Td> <Td colspan="1"> June 22 , 2014 ( 2014 - 06 - 22 ) </Td> <Td> August 24 , 2014 ( 2014 - 08 - 24 ) </Td> </Tr> <Tr> <Td> </Td> <Td colspan="1"> </Td> <Td colspan="2"> 13 </Td> <Td colspan="1"> June 21 , 2015 ( 2015 - 06 - 21 ) </Td> <Td> September 6 , 2015 ( 2015 - 09 - 06 ) </Td> </Tr> <Tr> <Td> </Td> <Td colspan="1"> </Td> <Td colspan="2"> 13 </Td> <Td colspan="1"> May 30 , 2016 ( 2016 - 05 - 30 ) </Td> <Td> September 11 , 2016 ( 2016 - 09 - 11 ) </Td> </Tr> <Tr> <Td> </Td> <Td colspan="1"> </Td> <Td colspan="2"> 10 </Td> <Td colspan="1"> August 20 , 2017 ( 2017 - 08 - 20 ) </Td> <Td> October 8 , 2017 ( 2017 - 10 - 08 ) </Td> </Tr> </Table>
how many episodes in season 4 of last ship
10