We made it through the narrows. Hugged the greens all the way and saw depths around 4.0 ft. The reward was a glorious reach with around 12 knots of wind into the Patspsco. I would definite be cautious if draft is over 4 ft. We draw 4 ft on our Catalina 27 fin keel. Went through at 11:30 EST, approx. 2 hours before high tide.