The baffle area isn't created by the ships screw, but the ships hull. That spherical array attaches to the hull which masks any contact aft of that line.
Same thing for the conformal array if equipped.
The towed array, say perhaps 1200 feet in length, the actual sensors can only occupy a length somewhat less than the platforms hull. At full deployment, that would put the forward beam some 900 feet behind ownship. Assuming a 30 foot beam, that subtends to a 2 degree angle.
The towed array is useless while manuevering, so why a large baffle for the towed array?
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Neptunus Rex sends
"In the spirit of reaching across the aisle, we owe it to the Democrats to show their president the exact same kind of respect and loyalty that they have shown our recent Republican president." A.C. 11-5-08 
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