Runkel - I think the chunk of wood on the bow is the spindle that was left over from the manufacturing process. I'm pretty sure that Scientific, like the other solid-hull wood kit companies, farmed out the making of its hulls to a furniture manufacturer, which turned the hulls on the same lathe it used for making table legs.
Back in the Goode Olde Dayes I made several visits to the old Model Shipways "factory," which consisted of a tiny storefront on a deadend street in Bogota, New Jersey. On at least one of those occasions a very nice lady (the wife of one of the two owners, I think) was sitting at a desk just inside the front door shaving the spindles off hulls that had just arrived from the furniture firm. The lower-priced kits, like those from Scientific, made the modeler do the job himself.
Carving off the spindle is one of the trickier parts of working with a solid hull kit. The photos may show you enough; if not, the plans in the Chapelle book certainly contain enough detail for that purpose. If you're within driving distance of a decent library, it may have a copy of the book. If not, hundreds of used copies are available on the Web - many of them for extremely reasonable prices.
Good luck. Despite their awful history, slavers make handsome models.
Youth, talent, hard work, and enthusiasm are no match for old age and treachery.