An overboarding quadrant (116) for underwater remotely releasing a flexible elongate submersible element (110) positioned thereupon. The overboarding quadrant (116) comprises a support (126) for lifting and lowering a flexible elongate submersible element (110), at least one restraint (150) to hold the flexible elongate submersible element (110) captive, and a restraint control mechanism (156), which is operable remotely. The restraint control mechanism (156) is arranged to move the restraint (150) between a captive condition and a release condition. A system including an overboarding quadrant (116) and a remote controller is also provided.A method of releasing a flexible elongate submersible element (110) from an overboarding quadrant (116). A method of resetting an overboarding quadrant (116) is also provided.