706 NICHOLLS'S SEAMANSHIP AND NAUTICAL KNOWLEDGE PAGE Parallelogram of lorccb (cont ) — Protecting clauses 13/L 584 Canal boat . . . 263 Protest . 593 Cargo spans . . . 269 Pumps .. . 416,474, T~I n 602 Current sailing . . . . 263 Pulleys . 28 Derricks . . . . . . 271 Purchase — .Moorings ...... 264 Sail propulsion . . . . 268 True and apparent wind . . 266 Advantage of . . 31, 39 Diffeiential Equations . 42, ,44 47 346 Parbuckling . . 402 Parcelling . . . . 49, 612 Partners' mast ...... 602 Friction Gun tackle Handy billy 39 42 43 Penalties relating to — Boat drill . .. .. 113 Luff tackle Single, double, treble . . 31 43 41 Life-saving appliances . 113 Collision . . 236, 242 Spanish burton Watch tackle 32 43 Reporting accidents . . . 237 Grain cargoes . . 408 Load lines . .. 373,377,383 Quadrant rudder . . 158, 334, 609 Not showing ensign ..... 551 Quarter 2 Penalty clause C/£ . . . . 587 Questions on — Pilot ...... 241, 593 Accidents 322 Pillars ...... 434, 450 Anchoring and mooring „ . . 319 Pintles . . . . . . . 465 Anchor work . 314 Pipelines . .. 419,441,474 Anchors and cables . 122 Pipe sounding . . . . . 475 Boat lowering 9 Piston ........ 171 „ construction 103 Plating, shell ...... 446 „ drill 87 deck ....... 447 ,, equipment 105 Plan cargo ...... 420 Cargo . . . . 422, 424 Planking boat . . . 103 Cargo and trim 527 deck ....... 449 Collision regulations 215 Plans, shear, body, half breadth 541 Deck appliances 180 Pneumercator . 368 Docking and berthing 402 Poop fittings ...... 158 Fire emergency 172 Poppets or cradle . . . . 544 Fog signalb 204 Portage bill ...... 593 Getting underway 305 Port Authorities . . 539, 550 Heaving off . 332 Port Sanitary Authority . . 553 How is she heading? 225 Post, propeller . . 461 Hydrostatics . , . * . 383 „ -rudder . . ..464 Life-saving appliances 110 Power of purchases , . . 31, 41 Motor boat 93 Preparing for sea . . . 294 Notices to Mariners 259 Pressure of water . . . 365 Parallelogram of forces 277 Promissory note . ' . . 593 Rigging and sails 65 Proof strength . . . 346, 566 Rope and wire pui chases 48 Propeller — Lights ...... 184 Action of ...... 287 Mensuration . 355 Bossing . . . . 463, 474 Ship construction 483 Bush ...... 328 ,, handling 294 Cavitation . . . . . . 287 Ship log books 340 Race ........ 289 „ stability 59£ Shaft ...... 472, 473 Slip ..... . .. 140 E Speed ....... 139 Racking . , « . , » 429 Steering effect . 290 Radio direction finder 162 Strut .. . ,. 474 Raft construction 339 Thrust .. , .,288 Rain gauge . . . . * - 151 To unship . . . 328, 472 Ratline , . . , „ , 612 Propelling machinery , . . 166 Rats 553