log rafts -- 7. Lashed log rafts (kattu-maram) -- 8. Pegged log rafts of four or five logs (theppam) -- 9. Fishing logboats without outriggers (vallam) -- 10. Ma-dal-vallam for shore seining -- 11. Sea-going vallam with outriggers (vallam-oru) -- 12. Vallam-type dinghies and tenders -- 13. Outrigger logboats (oru) on inland waters -- 14. Oru for sling net fishing (visi-dal-oru) and for fishing used on lagoons (kalapu-oru) -- 15. Fishing oru in Weligama Bay (vara-oru) -- 16. Oru for shore seining (ma-dal-oru) -- 17. Seagoing oru, rigged with double-sprit sails -- 18. Oru rigged with oars and sails with outboard rowing rails on both sides -- 19. Oru with one short rowing rail on the outrigger side -- 20. Oru with one long outrigger-side rowing rail between the two ends of the hull -- 21. Angula - double-hulled craft with a platform built over two oru -- 22. Ma-dal-paru - sewn-plank and double logboat craft for shore seining -- 23. Scale drawings of logboat hull-outrigger boom joints -- 24. Scale drawings of archaeological finds -- Appendices: 1. The author's surveying methods -- 2. The making of an oru in Sri Lanka by Vini Vitharana -- 3. Thoughts on the sailing qualities of oru - and some afterthoughts by Gerald Grainge -- 4. Standardization, orthography and pronunciation guide by Somasiri Devendra -- 5. Nautical terms and names of watercraft in Sinhala and Tamil languages.