Across the fen

Across the fen

Saturday, 8 June 2019

Sandweaver 16

The LS has bought another boat.

Sandweaver 16
He had become too old and fat and lazy for the Hobie Tandem Island.   It was an exciting and fast boat,  but not the coastal cruiser he had hoped for.   He resented the need to find a beach on which to pitch his tent.   Pitching a tent is something to be done overnight,  especially when coastal wild-camping,  and tides simply don't coordinate with day and night.   When cruising the coast in a dinghy it's necessary to sail with the tide,  and anchor,  sleep and eat when the tide is contrary.

So he sold the Hobie to a charming lady in Norfolk who knew exactly where and how she wanted to sail it.   She's about half the age (and girth) of the LS,  with ten times his energy.

The LS has bought a Sandweaver 16.   Sixteen feet (4.87m to you) of fibreglass with (alas) an aluminium Marconi mast and a Bermudan mainsail with roller-furling jib.   It's astonishing how a grown man can dream for so long about a varnished clinker dinghy with a balanced lugsail and then get a Sandweaver 16.   A triumph of common sense over romanticism?

The keel didn't rest on the rollers
One of the essential features of a cruising dinghy is that it can,  unlike most yachts,  be trailed from home to a launch site,  and then taken home from the same,  or another,  launch site.
The trailer,  and the position of the boat on the trailer,  are important.
The weight of the boat should be taken on all of the keel rollers.   The side rollers and slides are there to prevent the boat rocking side to side,  not to take its weight.   At purchase,  the Sandweaver was not fitted to its trailer:  its keel didn't touch two of the rollers  at all,  and its entire weight was borne on the two slides and the forward roller.   A couple of hours of anxious (scary) work with blocks,  jacks and spanners underneath the boat readjusted it all.
Break-back release pin & spring
The boat should be fore and aft on the trailer so that the weight of the tow hitch is about the same as a person:  no more than 7% of the weight of the fully loaded trailer:  in this case 35Kg (95lbs).   With the keel on the rollers the boat moved fore and aft fairly easily,  and the bow snubber of the trailer was adjusted to this.
It's important,  of course that the boat is easy to launch and recover:  a break-back trailer is one of the best ways to achieve this.   The pivot was oiled and the release pin & spring sprayed with easing oil,  and cleaned.   Sadly,  the outer arms of the trailer had been pinched tightly to the draw bar.   Adam advised that spreading the trailer arms might damage them or the weld,  and that it might be better to use the trailer without breaking its back for the time being.

The trailer was tested (to partial destruction) on the A14 and A1 for the Sandweaver's shakedown cruise.   It did not do well,  so it was taken to F S Trailers at Huntindon,  where Paul declared that "the bearings are shot:  the stub axle might be bent".   The tyres and mudguards need replacing,  and he quoted a very reasonable price for freeing the breakback mechanism.


The winch strap was at the wrong angle
The trailer winch,  which hauls the boat onto the trailer,  was in good condition and needed only cleaning and oiling.   The winch strap was sound and the carabiner which links the strap to the boat was not too bad.
But the U bolt in the stem of the boat was in entirely the wrong place,  so that the strain on the winch forced the bows down toward the trailer.   The best place for that U bolt is at the same height as the winch so that the boat is pulled straight onto the trailer.   The angle had caused the U bolt partially to pull out and had caused stress crazing in the fibreglass of the stem.
The U bolt was replaced with an M12 ring bolt through the stem band and stem,  and held with a shaped timber pad,  a large square washer and Nylock nuts.

The boat was described in the advertisement as "ready to sail":  an exaggeration bordering on an untruth.
The end-stop was missing from the mainsheet track,  and the mainsheet had been cobbled together with a set of blocks and jamcleats,  but no traveller car.   The first tack would have brought disaster.   A pair of blocks from the LS's bo's'n's* store and an endstop & car from Force 4 chandlery sorted out the mainsheet.   The shakedown cruise revealed that the mainsheet was a little heavy,  so the 2-part purchase was replaced with 3 parts.
The reefing lines were harder.   The mainsail had cringles for slab reefing,  but the boom had no cheek blocks:  it did have two tube cleats,  but they both faced aft!?   The LG's jury-rig involved 4 lengths of Hempex (and is too embarrassing to be shown in a photograph).
Later,  a pair of cheek blocks was screwed to the after end of the boom and 6mm Hempex used as reefing lines.   They are led forward to tube cleats on the boom.   The two forward reefing lines were led to nylon horn cleats on the mast below the gooseneck.
The main ha'lyard appeared to be OK.
The shrouds are held out by adjustable spreaders,  the ends of which,  being sharp metal and wire,  are covered by plastic or rubber boots to prevent the spreaders tearing or chafing the sails.   The boots had perished and cracked;  they were easily replaced.   

At purchase the jib had a wire luff with a swivel at the peak:  the tack roller lay on the broker's desk and was thrown into the sale.   The boat is now rigged with the Martin-Wykeham furling gear:  it can't be reefed.   A block at the stemhead and a 6mm line from the well through the block to the forestay ensured that the mast could be raised and lowered by one person.

Jib sheet fairlead and camcleat
The jib sheet sliders had been adjusted to be used by crew sitting forward in the boat,  but the LS will usually sail alone.   It was a simple matter to readjust the angle of the camcleats.


Rudder:  screw removed!
For a while the rudder was a mystery.   The vendor had pointed out that the uphaul didn't work:  had the bungee downhaul hardened over time?   No,  it hadn't:  to prevent the rudder floating up someone had driven a screw through the rudder cheeks into the rudder!   With the screw removed,  a spare length of cord as an uphaul and the fairlead moved to provide a fair lead the rudder lifted perfectly.
At the shakedown cruise it became clear that the downhaul bungee cord was not up (?down) to the job.   It was replaced with a downhaul cord and safety-release cleat.
The entire assembly was dismantled and given three coats of varnish.


Stainless steel engine mount
bolted to the stern deck
Electric outboard motor
The bracket for the outboard motor is something that the LS has not seen before.   Even though it's stainless steel it's lighter and smaller than most,  and it can be mounted and dismounted from within the boat.   It holds the Torqeedo 503 perfectly:  the long shaft projects well below the transom so that the propeller is in clear water.   The motor itself,  when not in use,  fits across the stern of the boat forward of the transom,  aft of the thwart.
If one must have an outboard motor an electric machine is a joy.   No petrol or oil,  no plugs to foul, no ignition to fail.   Virtually no noise,  and enormous torque from a big,  slow-turning propeller.

Rope tidies
The boat itself is spacious,  being nearly 2m in the beam,  but has little stowage space.   There are no lockers or lazarettes;  no bins or crates.   It's a day-boat,  with no attempt to provide sleeping space.   Curiously,  there was nowhere to hang lines,  but this was quickly put right with a set of rope tidies from Bayside Marine.   There is no galley,  no pantry,  no heads,  no tent and no bed.
There are two anchors:  one is a grapnel,  which most sailors don't like,  although it does have 2m of chain and 15m of line;  the other is a folding Fisherman,  which the LS doesn't like.   A coastal cruising dinghy is unlikely to anchor in water deeper than 5m (although Margaret Dye would have disagreed) so about 30m of line would be better than the 15m available.
The bo's'n's store has a Danforth anchor with 5m of chain and 50m of line,  but,  having seen a Danforth trap and ruin someone's fingers,  the LS is likely to use this only if nothing else is available. In the event,  he did use it.

There are two thwarts;  one aft at the helm,  the other forward across the centreboard case.   They are nearly 6 feet (2m) apart.   Two six foot planks,  resting on these thwarts,  alongside the side benches,  became an excellent bed.   Even better with the inflatable mattress and a sleeping bag.



*
For those who enjoy apostrophes this is a lovely word:  two sets of missing letters and a possessive!
Those who don't enjoy apostrophes can ignore my glee.

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