| PLIMSOLL | _ line, reference mark on a ship's hull indicating the maximum depth to which it may be safely immersed when loaded (8) |
| PLIMSOLLLINE | What reference mark on a ship's hull indicates the maximum depth to which the vessel may be safely immersed when loaded? (8,4) |
| IDLE | ___ threat (warning that may be safely ignored) |
| WIKI | User-edited on-line reference |
| WIKIPEDIA | Expanding on-line reference |
| DRAUGHTS | Depths to which ships sink in water (8) |
| LOON | Aquatic bird such as the common ..., Gavia immer (4) |
| SEMPER | Tout le temps, immer, perpetuo |
| BEAK | Word at Eton and Harrow for a schoolmaster; a rostrum shaped according to the diet of the bird to which it belongs; or, a projection at the prow of an ancient galley (4) |
| GOSPORT | Hampshire town on a peninsula on the western side of Portsmouth Harbour. opposite Portsmouth. to which it is linked by a ferry (7) |
| TORQUE | In physics and mechanics, a force that imparts rotation to a body to which it is applied (6) |
| WHEN | After which it may be said to stop mother (4) |
| DETERMINATION | Fixedness of purpose with which it may be trained on time (13) |
| ESSE | A minimalist word of maximum depth, for it defines the philosophical heart of being, existence and nature in its tiny quadriliteral breadth (4) |
| MAREMMA | Breed of sheepdog with a longish white coat, named after the Tuscan region to which it is native (7) |
| OMDURMAN | Most populous city in Sudan after the capital Khartoum, to which it is linked by several bridges across the Nile (8) |
| DILATION | Expansion with which it may be laid into (8) |
| PERMEABLE | Ample beer with which it may be saturated (9) |
| CHINE | From "pin, thorn", word for a beast's vertebral column; a cut/chop of this for cooking; otherwise, an angle in a ship's hull, a crest of land, a deep Dorset ravine, a mountain ridge, a projecting rim |
| EASTCHINASEA | Arm of the Western Pacific Ocean that reaches its maximum depth in the Okinawa Trough (4,5,3) |
