Definition(s)
TDU
Tool deployment unit.
Source: API Recommended Practice 17H, Remotely Operated Tools and Interfaces on Subsea Production Systems, Second Edition, June 2013 (Addendum 1, October 2014). Global Standards
Source: API RP 17H, Remotely Operated Vehicle (ROV) Interfaces on Subsea Production Systems, First Edition, July 2004 (Reaffirmed January 2009). Global Standards