A berthing assembly for a controlled atmosphere environment, which comprises first and second axially aligned and opposed, flanged connecting ports, a plurality of latch sections hinged together along their length and extending circumferentially around said connecting ports, a pressure seal between said connection ports, and a utilities feedthrough channel extending between said connection ports, said utilities feedthrough channel comprising a shell with a radius of curvature dimensioned to engage a wall of a passageway defined by the connection ports, a plurality of utilities connecting members positioned along opposing ends of said shell and being movably mounted for extension from the ends and withdrawal toward the ends, means connected to said connecting members for extending and withdrawing said connecting memberes, and means to form a hermetic seal with mating connecting members in the controlled atmosphere environment.