by andrew kerr n.
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  1. .By Andrew kerr Sail Trim, Tactics & Boat Handling for Speed By Andrew Kerr

  2. Tuning before the start – set up the critical settings and split tacks

  3. Rig tension – light Air • In light air watch the leeward shrouds – if they are taught then the rig is too tight , set it up for the lulls and lots of power

  4. Watch the leeward shrouds – how loose are they ? How much forestay sag ? Try a spinnaker halyard to the forestay as a reference.

  5. Key Elements upwind – Mainsail trim • At the start- set up for power, note the 3 baton positions on mainsail across the range of conditions – Open, closed, open again. • Light Air Upwind : • Set up the sail for twist - ventilate the leech – have a fast mark on the mainsheet. • Ease the Mainsail halyard to open the top of the sail

  6. Set up for power off the line

  7. Key Elements upwind in light air - Jib Trim • Soft Jib/ Genoa Halyard – keep evaluating. • Ease in the Lifts to help the speed and gain the lift

  8. Upwind Light/ medium air set up in chop/ swell – some sag for power.

  9. Trim the sails together, ease and squeeze .

  10. Roll tack the boat – but be sure not to pre roll as it unloads the boat.

  11. Roll tacking

  12. Speed build out of tacks with both leeches open and then closed as up to speed.

  13. Medium air

  14. Medium Air Trim • If smooth water Trim the mainsheet on so the top baton is parallel to the boom or 2 to 3 degrees to weather for pointing. • Set up for the lulls not the puffs – set the rig up half a setting looser than the tuning guide.

  15. Medium air trim • If choppy set the boat up with more twist to help deal the changing apparent windle angle changes .

  16. Medium air Trim • If there is too much forestay sag the mainsail will luff early – backstay on or tighten the forestay and/ or shrouds. • Play the backstay like a throttle for power – be sure to set it from the premise of max hiking on the rail

  17. Medium Air Trim

  18. Mainsail trim in medium air – flat water

  19. Medium air trim – flat water

  20. Contrast in Mainsail leech tensions – which looks best ?

  21. Jib trim – Medium air – flat water. Halyard tension effects leech profile .

  22. Heavy air Trim

  23. Heavy air Trim • Max outhaul • Max Backstay • Tight Cunningham • Rigid forestay • Tight vang – “ Vang sheeting” • Traveler down • Very tight Jib halyard for draft forward shape • Jib leads aft a small amount • Ease headsail in gusts in tandem with mainsail to keep the slot consistent.

  24. Minimum Forestay sag

  25. Heavy air Trim • Play the traveller to keep the boat at a constant angle of heel • If the traveller becomes exhausted as a vehicle of balance, or the gusts are coming in very quickly or you have a short traveller consider Vang Sheeting .

  26. Heavy air mantra – constant angle of heel.

  27. Twist !

  28. Heavy air Trim with the Jib • If sailing with the small jib – be sure to not over sheet it and ease it slightly in the gusts to keep the slot consistent and the boat tracking • Make sure the halyard is really tight so that you can ease the sheet and still maintain the leech profile

  29. Out hike the other teams !

  30. Hiking

  31. Key elements for a big fleet • Get off the line in the front row with a gap to leeward - go for a low density area. • Sail fast unhindered by other boats until you decide to tack and consolidate. • Meet the fleet later in the leg when it has thinned out and the lanes are wider.

  32. T10 NA’s 2010

  33. Starting pictures – T10 NAC 2009

  34. Starting pictures – T10 NAC 2009

  35. Starting pictures – T10 NAC - 2007

  36. Weather Mark rounding

  37. Rounding the weather mark • Be smooth – keep weight on the rail as long as you can • Ease the Vang slightly prior to the rounding • Be sure to ease the main out fluidly and quickly to help the bear away

  38. Sailing to an Offset

  39. Sailing to an offset mark – right shift

  40. Sailing to an offset mark • Sail the boat well between the marks • Sight the offset mark – where is it, how far and what angle ? Can we set the spinnaker? Do we have to beat to it? ( left shift)

  41. Downwind Trim Have the pole height or tack line set to a fast Mark • Have the Vang set to a fast mark • Assume the right angle as soon as possible – the trimmer should immediately be talking to the skipper about pressure on the sheet

  42. Assume the correct angle immediately – the trimmer should be talking pressure on the sheet all the time

  43. Downwind trim – Key elements • Play the pole height in puffs and lulls – raise up in the puffs to get more projection , lower the pole to induce stability in the sail • Playing the vang & watching the top baton carefully – 3 modes : • Low mode – top baton open 3 to 5 degrees • Average – parallel to the boom • Rolling – enough o stop rolling

  44. If overpowered on a reach- weight aft, go with a bigger curl on the luff , play the vang and leave the backstay on.

  45. Spinnaker Pole height • Watch where the luff breaks

  46. Spinnaker Pole height – Light

  47. Light air pole height with puffs

  48. Spinnaker pole height – Medium air

  49. Pole height in light/ medium air, center seam is vertical – look back for shifts/ puffs as you sail to the line.

  50. Spinnaker pole Height medium air