| | CLASS NOTES |
| 255 | DF | FISHING VESSEL |
| 256 | DF | FLOATING OR SEMI-SUBMERSIBLE STORAGE VESSEL |
| 257 | DF | SUBMERGED STORAGE VESSEL |
| 1 | DF | WARSHIPS {5} |
| 312 | DF | SUBMERSIBLE DEVICE {15} |
| 18 | DF | TORPEDO BOATS {1} |
| 20.1 | DF | TORPEDOES {7} |
| 26 | DF | SCOWS {1} |
| 39.11 | DF | METHOD OF SAILING SAILPOWERED WATERCRAFT |
| 39.12 | DF | SAILBOARD AND RIG MEANS THEREFOR {3} |
| 39.16 | DF | APPARATUS HELD BY OR ATTACHED TO RIDER TO CONTROL SAILBOARD OR SAILBOARD RIG {3} |
| 39.21 | DF | WATERCRAFT WITH MEANS USED IN PROVIDING SAILPOWER {7} |
| 40 | DF | ICE BREAKERS {2} |
| 43 | DF | ICE BOATS |
| 258 | DF | MOTHER SHIP, FLOATING LANDING PLATFORM, AND HARBOR {3} |
| 44 | DF | VESSEL RAISING AND DOCKING {3} |
| 55.5 | DF | MOTORIZED SELF-PROPELLED WATERSKI OR WATERSCOOTER-TYPE VEHICLE (E.G., PERSONAL WATERCRAFT) {7} |
| 271 | DF | HULL OR HULL ADJUNCT EMPLOYING FLUID DYNAMIC FORCES TO DERIVE A LIFT OR ALTER TRIM, E.G., PLANING HULLS {7} |
| 56.1 | DF | DISPLACEMENT-TYPE HULL (e.g., specific aftbody) {9} |
| 343 | DF | BOATS, BOAT COMPONENT OR ATTACHMENT {14} |
| 65 R | DF | BUILDING {17} |
| 89 | DF | SPARS {5} |
| 102.1 | DF | SAIL OR CONTROL MEANS THEREFOR {16} |
| 116 | DF | BULKHEADS AND DOORS {1} |
| 121 | DF | BALLASTING {5} |
| 127 | DF | CENTERBOARDS {5} |
| 140 | DF | KEELS {3} |
| 144 R | DF | STEERING MECHANISM {14} |
| 365 | DF | LIFE CRAFT HANDLING DEVICE, APPARATUS, OR IMPLEMENT {6} |
| 264 | DF | FLOATING PLATFORM {2} |
| 267 | DF | FLOAT STRUCTURE |
| 173 | DF | PORTS {2} |
| 179 | DF | HAWSE PIPES {2} |
| 182 | DF | SCUPPERS |
| 183 R | DF | BILGE DISCHARGE {2} |
| 187 | DF | SMOKESTACKS |
| 188 | DF | FURNITURE {3} |
| * | DF | VALVES {2} |
| 199 | DF | CABLE STOPPERS {1} |
| 201 R | DF | HATCHES AND COVERS {3} |
| 204 | DF | TRAVELERS {1} |
| 293 | DF | ANCHORING ARRANGEMENT |
| 294 | DF | ANCHOR {6} |
| 210 | DF | ANCHOR TRIPPERS |
| 211 | DF | VENTILATION {1} |
| 213 | DF | TENSION RELIEVERS {3} |
| 218 | DF | BITTS, CLEATS, AND PIN RAILS |
| 219 | DF | Fenders {1} |
| 381 | DF | CHOCK OR LASHING |
| 221 R | DF | IMPLEMENTS {4} |
| 227 | DF | LEAK STOPPERS {2} |
| 230.1 | DF | MOORING DEVICE {6} |
| 232 | DF | OIL DISTRIBUTERS {2} |
| 242 | DF | TOWING OR PUSHING {7} |
| 268 | DF | WITH HOIST OR DECK ENGINE |
| 269 | DF | MACHINERY ARRANGEMENT |
| 238 | DF | TORPEDO LAUNCHING {1} |
| 240 R | DF | TORPEDO GUARDS {6} |
| 382 | DF | MISCELLANEOUS |
