The full form of LPP in ships is Length between perpendiculars.
This term is a crucial measurement in naval architecture and ship design. It defines the length of a vessel and is used in various calculations related to stability, hull form, and regulatory compliance.
Here's a breakdown of what "Length between perpendiculars" signifies:
- It is the length measured along the summer load line.
- It extends from the forward surface of the stem (bow) to the after surface of the sternpost. These points are also referred to as the main bow perpendicular and the main stern perpendicular.
- It's frequently abbreviated as p/p, p.p., pp, LPP, or LBP (Length Between Perpendiculars).
Essentially, LPP provides a standard measurement of a ship's length for design and regulatory purposes, excluding any overhanging structures at the bow and stern.