scope:

This section establishes interface requirements for units of shipboard equipment with regard to mass/size/shape to ensure compatibility between such units and the shipboard access geometry environment.

Applicability. This section applies to units of shipboard equipment to be installed within the ship during or after it is constructed, or may be transported in or out of the ship, or relocated inside the ship during its life cycle. This section does not apply to large permanent machinery units (such as main propulsion machinery, steering gear, electric generators) which are installed during construction while the ship is being built around them, and there in no intention that such units will be physically disturbed or relocated during the ship life cycle. Also, it does not apply to weapons handling, for which other pertinent sections of DOD-STD-1399 apply.