Yes now that I can see your QBBL fairly well and your emersed transom. The DeFever is definitely semi disp and a bit closer to full disp than an Island Gypsy that I think (hull shape wise) is on the other side of SD. As is many to most other trawlers on the forum.
I see on the top pic the chine is straight (or parallel to the WL) as would be the case w a full plaining hull at rest. With the DF your inner buttock line (where bottom meets the keel) has a rather steep angle for trawlers. So your boat is a semi-disp and a bit closer to FD.
For years I've seen the submerged straight chine aft and in my own mind labeled the DF a SD boat. But quite a few guys obviously haven't liked that so I'm glad you pulled that out in the open. The DF is closer to FD.
Here is a full blown full disp hull. You can see that the QBBL running fore and aft half way between the keel and the side of the boat is very steep. Could be about 30 degrees.
North Western Washington State USA