Knapp. Knapp. Knapp. Knapp. Knapp. Knapp. Knapp. Knapp. Hahn Yacht Charter. Please feel free to contact us by phone or use the contact form +46 70 735 56 62. Name. Email. Message. Submit. Thanks for submitting! Hahn Yacht Charter. Rederi Hahn Charter AB Lasse Hahn. tel. 070 735 56 62. Stockholm.