If you open up the engine casing and lie flat on the cylinder head and turn your head sideways so that your right ear gets folded back on itself by the underside of the companionway and your left ear is jammed against the oil filler cap, you can just reach Samsara’s fuel tank outlet.

I blame Alfred Walter Maley

Alfred Walter Maley it was who bought the bare hull fresh out of the mould in 1973, loaded it onto a lorry and took it up to Wolverhampton where he spent the next three years fitting it out.

Clearly, the first thing he did was put in the fuel tank. I bet he was really proud of it – the way he shoe-horned it in under the cockpit seat and then put in the calorifier so you can’t get at the tank by crawling round the back of the engine (which he put in next, so that you can’t get at the calorifier either.)

But Alfred Walter Maley was not totally without foresight. Clearly, he was capable of thinking ahead fifty years to the day I would find myself rolling through 40° in Prickly Bay on the South Coast of Grenada with my head in the engine – just able to reach the outlet and poke about with the long end of an Allen key.

The fuel tank was blocked again.

Readers who have been paying attention will know that this happened a month ago in Antigua. That time I spent £500 on a Nelson’s Dockyard engineer who I’m sure had promised he had a wonderful machine for sucking muck out of fuel tanks (in fact we just pumped out the fuel and then poured it back in again through a filter until it ran clear).

Well, obviously that didn’t get rid of all the muck because after a good deal of poking and jiggling with the Allen key, even more emerged – first in long disgusting strings and then in great glutinous globs.

Until finally it ran clear into the Tupperware I held underneath to catch the last few drops that were left after I had syphoned out all the fuel.

This, in itself, had been a bit of an operation because the original solution was to fill the tank to the brim in the hope that the sheer weight of fuel would clear any airlocks in the pipes.

My first thought was to buy extra fuel cans – it would still be cheaper than paying for another engineer.

Then I thought of borrowing them.

Then I thought of using water bottles. In the end, I had three of these stacked around the cockpit – as well as the 20-litre emergency water can. Surely they couldn’t be more than a dribble left in the tank…

But steadily, inexorably, the Tupperware was filling up to the brim. So, it was with some urgency that I hunted about for something to replace it. This was not as straightforward as it sounds (see “ears” above.)

While holding the very-nearly-full Tupperware with one hand, I flailed around with the other in the hope of connecting with something that might conceivably hold some diesel.

I found a coffee cup.

OK, so a coffee cup might not be the ideal receptacle for emptying a diesel tank but I was never a coffee purist – the slight tang of fuel oil might well complement Starbucks’ Pike Place roast.

Then all I had to do was change hands. Without removing ears.

The coffee cup filled remarkably quickly. So did the next one.

Quite clearly the tank was not as empty as I thought it was. I now had three coffee cups full of diesel, the Tupperware, of course, and also a pickle jar which I had emptied (complete with the last couple of pickles) into the bilge. Maybe the vinegar would cut the oil…

Meanwhile, I seemed to be out of receptacles and had my finger over the spigot rather in the manner of a little Dutch boy with a Saturday job in a garage. Thinking about it logically, you might assume I would be stuck there – that I might be stuck there forever, or at least until a wandering engineer with a hose and a bucket might happen by one his merry round.

But no. Feeling around with the spare hand, I chanced upon a piece of kitchen roll abandoned on the chart table. Scrunched up one-handed, this might be pushed into the spigot and block the flow long enough for me to get the wooden plug out of the bottom of the washing bucket (which used to be the rain-collection bucket in pre-watermaker days).

It worked. Retrieving my ears from their resting places, I dashed to the fo’c’sle, yanked out the wooden plug (with my teeth) dashed back and jammed it in place of the kitchen roll.

Now I had all the time in the world to empty the Tupperware, three coffee cups, pickle jar etc.

I am pleased to report that the engine now runs without a hiccup and the boat smells only mildly of diesel.

I wouldn’t come for coffee though.