A nautical chart could be called a guide to safe navigation across the sea.
Every nautical chart used drawings to mark islands, wind direction, bearings, sea depth, ocean currents, and other important information in as much detail as possible.
A skilled navigator could quickly grasp everything about the waters they were currently sailing through after only a few glances at a nautical chart.
Of course, that depended on the chart being accurate and professional.
In the One Piece World, where the relevant equipment was relatively underdeveloped, drawing a detailed nautical chart stroke by stroke was by no means an easy task.
Yet this seemingly ordinary surveying room was actually piled high with so many nautical charts.
Lafitte was quite surprised, even as his interest was piqued.
"So the Arlong Pirates had someone like this? What a pity."
Images of the Fish-Man corpses strewn all over outside flashed through Lafitte's mind.
Even though he regarded life as no more valuable than weeds, he could not help feeling regretful at that moment.
Lafitte went to the table where the nautical charts had been drawn.
When he saw the pen shafts stained with blood in the pen holder, a strange glint flashed briefly in his eyes.
"Looks like they weren't drawn by a fish-man."
Lafitte reached that conclusion based solely on a single bloodstained pen shaft.
Without thinking too much about it, Lafitte casually picked up a nautical chart and began looking it over.
A few seconds later, he set it down and picked up another chart.
Before long, he had finished looking through all the recently drawn nautical charts.
"Truly remarkable."
Lafitte silently put down the chart and turned to look at the stacks of nautical charts piled against the wall, almost reaching the ceiling.
It was impossible to estimate how many