Corel is one of what folks in this Forum have come to call the HECEPOB companies. (HECEPOB = Hideously Expensive Continental European Plank On Bulkhead.) Other culprits are Mamoli (whose factory recently burned down, so it's apparently out of the picture), Artisania Latina, Sergal, and Steingraeber. Their products are characterized by shoddy materials, lousy plans, useless instructions, inaccurate fittings, and inadequate to non-existent historical research.
Later edit: I have no idea why the server put the last paragraph in italics. It won't let me change it.
I checked the Coast Guard Historian's Office website. It seems the only vessel of the Coast Guard or its predecessor agencies known to have been named Ranger was a lighthouse tender purchased in 1857. ( http://www.uscg.mil/history/webcutters/Ranger_1857.asp ) The early records of the Revenue Cutter Service are notoriously sketchy, but it looks like the Corel kit is completely bogus.
There are, to my knowledge, three wood scale sailing ship model companies whose products are worth buying. One is British: Jotika ( www.jotika-ltd.com ). I've never laid eyes on a Jotika kit, but it's clear from the company catalog, and from various reviews that its products are first-rate (if expensive). The other two are American: Model Shipways ( www.modelexpo-online.com ) and Bluejacket ( www.bluejacketinc.com ). Another American firm, A.J. Fisher ( www.ajfisher.com ) has just been resurrected after several decades out of business. I haven't seen any of its kits yet, but in its earlier years the firm had an excellent reputation.
Later edit: Before my Forum friend Don Stauffer jumps in to correct me, I'll add another name to the list of good manufacturers: Midwest ( http://midwestproducts.com/collections/boats ) . It concentrates on smaller vessels, but its kits are well-designed, contain good materials, and have some of the best instruction manuals in the business. A Midwest kit is a great way to break into the hobby.
Just about any serious scale modeler will advise you: Stay away from HECEPOBs.
Youth, talent, hard work, and enthusiasm are no match for old age and treachery.