The Roxar Downhole Subsea Canister incorporates the Downhole Network Controller (DHNC) card, allowing for interface and communication of the Integrated Downhole Network (IDN) in a subsea well. The canister incorporates standard connector interfaces, with full IWIS compatibility, to support customer’s preferred wet-mate connection. The subsea canister is can be designed for both permanent and retrievable subsea installation. The retrievable version uses an ROV handle to enable secure subsea installation.