701. Vessels as Private Domains

Shabbos 14:2

Vessels can be private domains. This includes such things as boats, wooden cabinets and beehives provided that they are at least four handbreadths by four handbreadths (about a foot on each side) and ten handbreadths high (about 30”).

Shabbos 14:3

The thickness of a private domain’s walls are considered like the private domain. If they are sufficient to distinguish the area, they certainly distinguish themselves. The space over a private domain is considered a private domain all the way up to the sky. Conversely, the space ten handbreadths (about 30”) above a public domain is considered an exempt area (makom patur).