Friday 24 January 2020

Winter Maintenance in London Year2 #2

Hi everyone,
Picking up the pace on posting now.  We have a lot to do before departing St Katharine's Dock in the spring.  Two related topics today...

Cushion Covers and Seatback Bags


A year ago we had Shipshape Bedding make new cushions for the forepeak and saloon as described here.  We decided not to replace the saloon seatback cushions at the time.  The cushions are fantastic.  It was great to have a proper berth in the forepeak after several years without.

Last summer we had Shipshape make a waterproof cover for the forepeak cushions.  They used cockpit cushion cover material.  This also worked out very well and was described here.  We liked them so much we dreamt up other uses for this type of material.  Shipshape was very helpful and prepared drawings based on our ideas.

Last week the order arrived.  This included a set of seatback bags for the saloon seats.  By filling them with clothes they're comfortable seat backs.  And we've freed-up half a dozen large, A4-size plastic stowage boxes.  And the saloon is looking great!

Cabin View with Cushion Covers and Seatback Bags
Port Side (bags empty)
Starboard Side (bags full)
The six bags are attached by 2" velcro strips.  Two of them on each side can be lifted to access the outboard lockers.  All the bags are closed with velcro.

Washboard Bag


We have two pairs of washboards - one wood and one perspex.  Shipshape also made a bag in which we can stow the lazy washboards.  The bag is mounted beside the quarter berth.

Washboard Bag Closed
Washboard Bag Open
Our next project will be software to display WiFi NMEA2000 data, including the data output by our Airmar 220WX weather station.

Thursday 16 January 2020

Winter Maintenance in London Year2 #1

Hi everyone,
Another long time no post situation.  Two topics today.

Presentations

Over the years we've been asked to give presentations by various organisations.  We've put the PDF versions of the slides online for reference.  They can be found on Dropbox here.

It's interesting that the most common topic is use of satellite imagery in marine navigation.  Our posts on this topic are amongst the most popular.  These can be found by searching the blog for "kap", the result of which is here.

Perspex

Last year we decided to upgrade our perspex washboards.  Washboards fit in the companionway to either lock up the boat or to keep water out of the cabin at sea.  In the past we've "copped greenies" which cascaded water down into the cabin.  In one incident we flooded the cook top and a gas sensor below it.  With closed washboards that shouldn't happen.

Washboards are often in two pieces so that one can be fitted, allowing crew to clamber over it when going on deck or going below.

We have two-part wooden washboards which have steadily reduced in thickness at each refurbishment.  They're now oiled and look good but are a little thin.  The top half has vents which are good for ventilation in harbour but not good in the face of solid water at sea.

We also had a one-part tinted perspex washboard.  This was quite thin and so not up to the job either.

Late last year we ordered new perspex washboards from Project Plastics.  They are 15mm thick and fit perfectly - measure N times, build once!  They are tinted and in two pieces.  The upper board had a cut-out to transfer an inspection hatch.  We transferred other fittings too, including the latch with which the companionway can be locked.

New washboards
The inspection hatch is interesting.  It's purpose is to allow crew on deck to unlock the two barrel bolts below which secure the sliding companionway hatch cover.  It's a sensible safety rule that companionway locks must be operable from on deck and below.

The increased thickness of the new perspex meant we had to rebuild the s/s latch mechanism.  The photo below shows the "kink" we needed in the s/s bar.  Thanks Dave!

Modified hinge
We still have the canvas cover we installed in Darwin some years ago.  It folds up to rest atop the hatch cover.  It's great for privacy, for keeping the sun off computer screens below and for keeping the rain out in light-moderate following winds.

Canvas cover unchanged
Our winter projects are electronics.  We're currently working on SaiLog, an app to display realtime data from our NMEA-2000 network.  More on that in due course - hopefully soon!