Please answer the following question: Given the following context:  As the Germans invade Poland in September 1939, the former horse racing-correspondent Colin Metcalfe is placed as a foreign correspondent in neutral Norway. Eight months later he meets a Norwegian fisherman, Captain Alstad, in a sailors' bar, where a scuffle breaks out between British and Norwegian sailors (singing "Rule Britannia", egged on by Metcalfe) and German ones (singing the Nazi Party anthem the "Horst-Wessel-Lied"). Alstad takes him aboard his boat during a sea voyage in Norway's territorial waters, during which they sight the Altmark and are fired upon by a German U-boat, despite Norway's neutrality. They then come back to his home port of Langedal, and Metcalfe goes to Oslo to report this to the British embassy there, despite the best efforts of the German Kommandant and the German-sympathising local police chief Ottoman Gunter. There Metcalfe meets Frank Lockwood en route back to England from the Winter War in Finland. It was Lockwood who had got him the foreign correspondent job at the outbreak of war, but he now passes on the news to Metcalfe that he has been fired from it for sailing out with the fisherman rather than staying on dry land where the paper can contact him. Metcalfe informs the embassy, and also warns his paper of signs that a German war on Norway is imminent. Alstad's daughter Kari (who had accompanied them on their voyage) also meets him to tell him of suspicious German merchant ships at Bergen which her father suspects have troops on board.  answer the following question:  Who does the correspondent sail out to sea with?
A:
Captain Alstad