Submarine pipeline alignment rig

An apparatus for working on conduits in a submerged location, comprising:

• working section means operable to align conduit sections;
• truss means detachable connected with the working section means and operable to lift a conduit section;
• the truss means including a fulcrum assembly for engaging said conduit section;
• the working section means including;
• frame means;
• housing means for containing a submerged gaseous environment and for providing a submerged work space, and being movable relative to the frame, and said fulcrum assembly and
• manipulating means for engaging a submerged conduit section and causing relative movement between the housing means and the submerged conduit section along each of two axes, carried by the housing means and movable with respect thereto, spaced from said fulcrum assembly, and operable to pivot said conduit section about said fulcrum assembly and fix the relative position between the housing means and the submerged conduit section.

Apparatus for aligning submerged conduit sections comprising:

• truss means including:
• hoisting means for lifting a conduit section into engagement with the truss means,
• fulcrum means providing conduit engaging contact surfaces about which said conduit section is pivotable, and
• locking means for avoiding inadvertant separation of the conduit section from the truss means;
• and
• working section means detachably connected to the truss means and including:
• frame means for connection with the truss means,
• housing means for containing a submerged working environment, being vertically movable relative to the frame means
• manipulating means spaced from fulcrum assembly for pivoting a distal end of the conduit section about said fulcrum assembly relative to the truss means, mounted on the housing means and operable to adjust the distal end along each of two axes transverse to the conduit section, and securing means for avoiding separation of the conduit section from the manipulating means.