Just a few U-Boot emblems, 100px vertical height
U3 (Type IIA)
U9 (Type IIB)
U3 (Type IIA), U20 (Type IIB), U23 (Type IIB), U59 (Type IIC), U-227 (Type VIIC), U-314 (Type VIIC), U-344 (Type VIIC), U-394 (Type VIIC, U-426 (Type VIIC), U-440 (Type VIIC), U-467 (Type VIIC), U-505 (Type IXC), U-534 (Type IXC/40), U-546 (Type IXC/40), U-555 (Type VIIC), U-643 (Type VIIC), U-710 (Type VIIC), U-869 (Type IXC) and U-1230 (Type IXC/40).
U23 (Type IIB)
U40 (Type IX)
7th Flotilla , U-46 (Type VIIB), U-47 (Type VIIB), U-75 (Type VIIB), U-98 (Type VIIC), U-103 (Type IXB), U-135 (Type VIIC), U-213 (Type VIID), U-358 (Type VIIC), U-359 (Type VIIC), U-382 (Type VIIC), U-390 (Type VIIC), U-442 (Type VIIC), U-567 (Type VIIC), U-578 (Type VIIC), U-590 (Type VIIC), U-607 (Type VIIC, U-618 (Type VIIC), U-714 (Type VIIC) and U-976 (Type VIIC).
U-48, U-564 (Type VIIC), U-998 (Type VIIC/41), U-1221 (Type IXC/40) and U-2518 (Type XXI).
U49 (Type VIIB)
U99 (Actual golden horseshoes welded to the sail) (Type VIIB)
U100 (Type VIIB)
U103 (Type IXB) and U605 (Type VIIC)
U181 (Type IXD2)
U126 (Type IXC) and U181 (Type IXD2)
U-57 (Type IIC), U-552 (Type VIIC), U-794 (Type XVIIA), U-1406 (Type XVIIB) and U-2513 (Type XXI).
9th Flotilla, U-96 (Type VIIC), U-217 (Type VIID), U-230 (Type VIIC), U-377 (Type VIIC), U-407 (Type VIIC), U-450 (Type VIIC), U-591 (Type VIIC), U-659 (Type VIIC), U-664 (Type VIIC), U-739 (Type VIIC) and U-954 (Type VIIC).
10th Flotilla, U-160 (Type IXC), U-170 (Type IXC/40), U-176 (Type IXC), U-508 (Type IXC), U-510 (Type IXC), U-516, U-525 (Type IXC/40), U-539 (Type IXC/40), U-543 (Type IXC/40) and U-772 (Type VIIC)
24th Flotilla and U-748 (Type VIIC)