Predictions regarding damaged land access by a serial earthquake in Lombok, West Nusa Tenggara in 2018, was the background of the Rumah Sakit Terapung Ksatria Airlangga (RSTKA), being sent. RSTKA is phinisi ship with an operating theatre and other healthcare facilities. The earthquake was not accompanied by a tsunami, so the dock was suitable to be used for leaning. The study analyzes patient data in RSTKA, and as an evaluation of field hospitals. This study used observational descriptive design. Obtained 1601 patients with disease distribution classified as trauma and non-trauma. A number of patients who came to RSTKA were volatile. The number of cases recorded was more than the number of patients because some patients had more than one health problem. Trauma cases recorded 121 cases (6.7%) while non-trauma 1679 cases (93.3%). Non-trauma cases have increased rapidly since the fourth day. The trauma case was dominated by soft tissue injury 57.02%. Non-trauma cases were dominated by non-infectious diseases with 919 cases (54.8%) and 760 cases of infection (45.2%). Infectious diseases were dominated by respiratory infections (437 cases) followed by gastrointestinal infections (239 cases). Humanity mission of RSTKA has succeeded in making meaningful contributions to disaster-affected communities in Lombok, especially in North Lombok District.