Initial plans included the Update IV electronics equipment of the P-3C. The cockpit was to be fitted with eight CRT displays and a stowable HUD for weapons delivery. Other equipment included search radar, MAD, decoy flare launchers, electro-optical detector, radar warning receivers, IR suppression on the engine exhausts and laser deflection screens on the windows. The primary submarine detection sensor was to be the sonobuoy, of which 112 were carried internally; 38 more could be stowed for in flight reloading. Another 150 could be carried in 10 underwing pods.