The arrest of Mason and Slidell on November 8, 1861,near the Bahamas triggered a major diplomatic crisis between Britain and the United States. The British had not taken sides in the American Civil War and they accepted any paying customers wishing to travel on their ships. When Mason and Slidell were arrested, the British were furious that their ship had been detained and their guests taken into custody. The British government demanded their release. The Lincoln administration refused, and the Americans waited for the British reaction. The British stood firm by their demand and prepared for war with the United States.
Shiplap is a type of wooden board used commonly as exterior siding in the construction of residences, barns, sheds, and outbuildings. It is either rough-sawn 1" or milled 3/4" pine or similarly inexpensive wood between 3" and 10" wide with a 3/8" - 1/2" rabbet on opposite sides of each edge.  The rabbet allows the boards to overlap in this area. The profile of each board partially overlaps that of the board next to it creating a channel that gives shadow line effects, provides excellent weather protection and allows for dimensional movement.