Britain's King Charles III (C-R) and German President Frank-Walter Steinmeier (C-L) arrive for a boat trip at the port in Hamburg, northern Germany, on March 31, 2023. - Britain's Royal Couple is on a three-day tour in Germany for Charles' first state visit as king, with the trip billed as "an important European gesture" to maintain strong ties after Brexit. (Photo by Matthias Schrader / POOL / AFP)