What type of joint is formed between two plates in the same strake of hull plating?

The type of joint formed between two plates in the same strake of hull plating is called a butt joint. This joint is characterized by the edges of the two plates being aligned and welded together without any overlapping. In shipbuilding, especially in hull construction, butt joints are often used because they provide a smooth surface along the hull, which is essential for hydrodynamic efficiency and structural integrity.

Utilizing butt joints allows for a continuous surface that is less likely to develop stress concentrations that could occur in other types of joints, such as corner or overlap joints. This feature is particularly important in marine environments where strength and durability against harsh conditions are critical.

Moreover, butt joints are easier to inspect for weld integrity, making them a preferred choice for ensuring the structural reliability of the hull. This contrasts with overlap joints, which can create unnecessary protrusions on the surface and may lead to areas of weakness. By understanding this, it's clear why the correct answer is butt joint for the scenario presented.