I note from the DB planner that if you travel from UK to europe avoiding ICE it sends you via Harwich. As I've noted on the TEE thread, with reduced air travel demand for eurostar is going to rise post covid, and thus fares will too inevitably. Not everyone relishes the idea of navigating two capital cities (London plus either Brussels or Paris) en route to other european destinations. So why not ease the potential overcrowding and introduce a cheaper mid-day sailing from Harwich. A 1230 or 1300 departure could be achievable using current sevice trains arriving Harwich 1117 from Newcastle, Leeds, Birmingham etc all not via London. Arrival in Amsterdam would be late, granted, 2330 ish, but other connections to Belgium and Germany not via Amsterdam are possible with a 2000 arrival in Holland. Might ease the lorry stacks in Kent too?