All answers contain ship or sailing vessel.
34, And this could be a good push ! (5)
42,We can spot the sea at the start of a three masted vessel (7)
55,It looks the same whichever way it goes (5)
thank you.
Catswhiskas - Why do you believe that 42 is Clipper. I also thought of this because it begins with a "C" (sea) and is a 7 letter three masted vessel.
However these also fit that criteria - CARAVEL and CARRACK
I don't see how any of these three ships fit!