500
"His small body was wide at the hips, tapering upward to extremely narrow sloping shoulders, so that it resembled, in shape at any rate, a bollard" (208).
what is a bollard? What may this description imply?
A thick low post, usually made of iron or steel, mounted on a ward where mooring lines from vessels are attached.
This ay imply that Mr. Botibol is not a strong swimmer due to the heavy weight and skinny shoulders .