What-all is the average speed for ships before 1974 with over 1.73 passenger?
Ship name Year Length Width Passengers Vessels Speed
Maritime Company of Lesvos
11570929
text real text text real real real
2-11570929-1
RO/RO Passenger Ships
RO/RO Passenger Ships
Mytilene 1973 138,3 m 22,4 m 1.730 225 20
European Express 1974 159,5 m 21,5 m 1.000 350 23
Ionian Sky 1974 164 m 24 m 1.090 600 22
Theofilos 1975 149,4 m 23,5 m 1.660 433 18
Taxiarchis 1976 135,8 m 20,6 m 591 392 18
Aqua Jewel 2002 108 m 16,6 m 1.675 175 18,5
Aqua Maria 1975 101,3 m 18 m 592 230 17
Aqua Spirit 2000 75 m 15 m 400 60 17
SELECT AVG Speed FROM table WHERE Year < 1974 AND Passengers > 1.73
1974 1.73