Yes and no...
There is a major difference between smaller "swing keel" boats such as the Catalina 22 or 25 and MacGregors, compared to larger boats where the centerboard is fully enclosed within the keel, and where the fixed keel is where the ballast is maintained. The swing keel boats are meant for protected waters, and not ocean passages. The larger keel/centerboard boats can be very safe and unproblematical on big water crossings. I'm not specifically familiar with a Maple Leaf 42, but on most keel/centerboard boats, the potential problem area is, like the smaller boats, the cable that pulls the board up/down. On your haulout for survey, if it looks good, I would not be concerned. I'd also google "Maple Leaf 42" to see if there are any user groups or other info available that may give you hints of things to look out for. The advantage of K/CB boats is the shallow draft while still pointing high.I recently made a 130 mile passage to windward around Pt. Conception in a Tartan 37 keel/centerboard in 30 knots+, and the whole thing worked great! I wouldn't have wanted to try that in a Cat 22 or MacGregor!Good Luck!