Yes - I've done it on a 47 foot cat - sailed (motored / sailed) over and back from the BVI's with no problems what so ever. July is not my choice for sailing in the Caribbean because you're into hurricane season. But we had no problems. Have done that back and forth BVI's / SXM three times and never had a problem. Just be aware of any weather systems east of the islands before you commit to a crossing. Had a great time. Sailed to SXM, then to St Bart's and then to SABA before heading back to the BVI's. Spent some time on each of the islands. Enjoy.