The "Collins"-class was not designed to support special forces operations providing a limited capability similar to the "Oberon"-class. In 2005, "Collins" received a special forces upgrade to provide three capabilities of multi swimmer release, float on/float off and exit and reentry. However, there were issues with exit and reentry during sea trials. Originally only one submarine was planned to receive the upgrade. In 2014, "Dechaineux" was upgraded and the issue with exit and reentry was rectified. "Collins" is scheduled on its next maintenance docking to receive the safety upgrade for exit and reentry. However, the full special forces upgrade is yet to be reached with outboard stowage of equipment, such as for inflatable boats, still in the design phase.