Measuring 26 meters in length, Kapetan Kosmas was fully renovated in 2017. The gulet features two master cabins and three double cabins, providing accommodation for up to 10 guests, all of whom enjoy air-conditioned cabins. Each cabin is equipped with its own private WC and shower. 

The rear of the boat offers a spacious cushioned seating area, a dining table, and a dedicated dining space. Inside, the salon features a separate dining table, and meals are prepared in a fully equipped kitchen. The gulet also provides ample sunbathing space and mats for all guests to enjoy. For entertainment, the salon is equipped with a TV, DVD player, and music system.