What is in this image? Describe it as if you were explaining it to someone from the 15th century.

This drawing depicts a fantastical vessel, resembling a great arrow but fashioned with characteristics akin to a cottage with windows. Within these rounded windows, two jovial characters don cloth wrappings around their heads, akin to the garments of explorers or perhaps mystics of your age, allowing only their faces to be seen. They are depicted with broad smiles, suggesting pleasure or perhaps a friendly demeanor.The vessel itself is surrounded by tiny representations of stars, and near the top left, there appears a stylized, circular depiction of the moon, adorned with craters and areas of shadow, much like the celestial body you might observe on a clear night.This scene is surely a product of imagination, designed to entice wonder and curiosity, portraying a journey or adventure among the heavens, a concept that might evoke images of journeys to mysterious or hitherto unexplored realms, akin to the mariners of your time setting forth across uncharted seas.