 However, the market for this technology did not materialize, and the proposed SES-10 ("SLOWPOKE-4" based on SDR experience) was never built, and the SDR shutdown for decommissioning.During the mid-1980s Canada briefly considered converting its Oberon class submarines to nuclear power using a SLOWPOKE nuclear reactor to continuously recharge the ship's batteries during submerged operations.A good deal of work had been done on potential marine applications of the reactor at Royal Military College of Canada.