A friend of mine is on the boat "Special Delivery" (Taswell 58) in the 1500. From the emails his wife has forwarded they've had a pretty rough time with 50 knot winds and some 20 foot seas. She was pretty shook up when she got the email in the OP. Sounds like the reef around Lynard Cay is difficult to navigate in broad daylight with calm seas much less at night with heavy swells.
Hope they find Laura safe and sound.