In 1972, P&O formally absorbed the British-India Steam Navigation Company (BI). The amalgamation of these two companies began in 1914 but BI had retained its own identity until this time. Strick Line and Hain-Nourse, amongst several other lines were also taken over in the early 1970s. BI cargo ships were renamed Strath*M* ("Strathmore", "Strathmuir", "Strathmay", etc.) or Strath*C* ("Strathcarron", "Strathcarrol"), the Strick line ships renamed Strath*A* ("Strathanna", "Strathaird", "Strathattrick" (the big "A") etc.) and the Hain-Nourse ships Strath*T* ("Strathtruim", "Strathtay" etc.). The newest ships were 6 Strath*D*s ("Strathdoon", "Strathduns" etc.), SD14s built in Sunderland. P&O also built 6 ships in Stocznia Gdansk, Poland (the Strath*E*s) and 2 ships in Japan (the Strath*F*s) and bought into DOT, a naval shipping company.