Dinghy Heat Shield

Our dinghy lives on a rack mounted above the chimney for our heater. This is not a problem in the warmer months, when we are using the dinghy often and the stove is off, but it can pose a bit of an issue in the cooler months when we would be running the heater to keep us from freezing inside the cabin!

The heat leaving the chimney is pretty darn warm. According to a thermal gun, the chimney itself gets up to around 300F, and the carpeting over the dinghy bedrail was getting up to 180F until we shut the heater down to save the carpeting! This test was performed without the dinghy in place, as we did not want to risk harming the fiberglass hull with this heat.

To allow us to heat our home while we cruise with the dinghy on the deck, we opted to install a heat shield. 

The concept was simple, the heat leaving the chimney needed to be blocked from rising into the dinghy. It needed to be open to the sides that way the heat could be vented away, and it had to be able to surive in the marine environment. Lastly, it had to be inexpensive as we are currently cruising on a tight budget! 

A visit to True Value brought us to our solution! We bought an aluminum baking sheet for a few dollars and secured it in place! The rolled edges of the pan will avoid any injuries to our shins as we walk around this area of the deck, and the aluminum itself will not rust away in the salt air. The large surface area of aluminum will also act as an efficient heat sync, dissipating the heat from the chimney as we sail. 

To test out the setup, the heater was ignited and allowed to get up to temperature. The heater itself was 550F, while the top of the chimney was only 120F. The air coming out of the chimney was a sturdy 200F and the heat shield stayed at 100F for the duration of the test. Best of all, the carpet never got above 90F (which was the ambient temperature on that day). To keep the aluminum slightly off the rail, I cut and re sawed a 2x4 to create small wooden spacers that would provide a dead air space for heat to escape from. This increases the air flow between the aluminum and the carpet, keeping everything cooler.  

The top of the chimney might seem a bit close to the heat shield, but this isn't a large concern as most of the exhaust exits the bottom of the chimney top. 

To hold it all in place, I used stainless steel seizing wire, as it allows me to tie a tight lashing, just like with rope, but it will be immune to the heat from the chimney. I tied it very tight that way the pan would not spin or shift around and so that the metal wires would sink into the carpet, remaining slightly in relief of the dinghy hull above. 

With the heat shield in place, we feel safe lighting the heater with the dinghy on the deck, knowing that the fiberglass will not catch on fire as we try to keep warm. One other point of mental peace is we won't be using the heater unless it is cold outside, and these cold days will mean a more efficient heat transfer from the aluminum to the air.  

Heat shields are very useful tools on a boat. They can allow you to have a very hot object placed very close to heat sensitive materials without the fear of damage or fire. 

Snubber

All chain anchor rode has the advantage over rope in that the chain is heavy and produces a more pronounced catenary curve. This curve will allow your anchor rode to pull horizontally on the anchor, which will allow it to hold well, as opposed to a slight upward pull, which would cause it to drag. The problem with all chain rodes is that the chain offers no elasticity. If your yacht is lurched back, the curve will straighten out and snap on the chain with a considerable shock load as the yacht pulls the chain tight and then ends in an inelastic lurch. To avoid this minor issue, it is best to use a snubber made out of a very stretchy material, such as 3-Lay nylon rope. 

A snubber is merely a piece of line that is tied off to the chain and to a cleat on the bow. It can either come off the bow through the roller or through a rope chock on the side of the bow. Either way, it will remove the last bit of shock that could be present if the chain were to be pulled tight. 

Setting up a snubber is very easy. Once the anchor is set properly, simply tie the end of the snubber to the chain with a secure knot, then let out more chain until the chain hangs straight down from the bow and the snubber has taken up the full load. 

A common knot used to tie a snubber is a Rolling Hitch, but I personally use a Magnus Hitch. Both knots will hold onto chain very well, I just find that the Magnus Hitch is much easier to untie after it has been loaded and stressed. 

You can see how the snubber is transmitting the load from the bow to the chain, and the chain that lies between the boat and snubber hangs slack off to the side.  

When I will be anchoring for a long time, or during a storm, I will also add two Half Hitches to the knot, that way the snubber has even less chance of coming untied in a desperate situation. 

Snubbers are easy to setup and offer a lot of security and comfort to an anchored yacht. They only take a few minutes to setup and will give you peace of mind for the entire time you are at anchor. 

Anchor Lights

The requirement for an anchor light for most pleasure boats is 360 degree visibility for 2 nautical miles. This means that the anchor light must be located above everything else that way it can be seen from any direction. 

On a power boat, the anchor light is typically located at a reasonable height, just above the flying bridge. On a sailboat, this location is elevated significantly, as they are placed on top of the mast. 

Yes, the anchor light is very visible from a distance, alerting others of your presence and preventing a needless collision, but only at a distance. When we have anchored in busy anchorages, where there seems to be a lot of boat traffic as the sun is setting, we notice that people have been skirting past us at a rediculously close range. 

This made me wonder, do they see the anchor light way up high in the night sky? Or is it out of their field of view? 

The other problem with a single white anchor light is it does nothing to demarcate where we start and where we end. Ideally, other boats would keep a safe and reasonable distance from us, thus nullifying any fears or concerns of a close passing vessel, but they do not seem to care in the same way. They will pass less than 10 feet from our bow or stern, missing us only by luck! 

Before our luck runs out, we have made some alterations to our setup. We hung a solar powered lamp off the stern and off the bow. When we are anchored in a high traffic area, we can simply turn them on at the times of peak traffic (usually when small skiffs are returning home after the sun has set) so that these inconsiderate boaters can better see where we start and where we end.

I can not say for sure if this has worked becuase I do not know what is going through the mind of someone who flies through an anchorage at full throttle in the dark, but I can say that since we have started setting these lights, there has been a much greater distance granted between us and the speedy passerby. 

Ideal Sailing Conditions

When people dream about sailing, they often picture a steady breeze and full sails set as they power through the seas. In a dream world, this may be fine, but in our world, ideal sailing conditions refer to winds that allow us to get to where we want to go as quickly and comfortably as possible. 

We have found that when we are full sail, the winds are actually a bit on the light side and we aren't going as fast as we could be if we had more wind. 

To us, ideal sailing conditions often involve a reefed sail plan. If we are reefed, we always have more sail available to us than what we are using. This means that if we feel the desire to go faster, all we need to do is set more sail! If you are full sail, then you have no recourse left, you are already at your maximum and have nowhere to go from there! 

In this situation, we were close reaching under our staysail and our mainsail with one reef in it. We were still able to achieve 5.5 knots with ease without heeling over much at all. This keeps the boat level and life aboard more comfortable as we don't have to worry about stuff sliding off of horizontal surfaces in the cabin.  

The only way this could have been more ideal is if we had been on a broad reach, there the seas come from behind and help push you along, instead of beating into them as you work to windward. 

All in all, when there is plenty of wind, you can reef down for comfort and still maintain your boat speed through the water. This will keep you moving fast, morale high, and dream sailing a reality! 

Stowaway

A rather common sight to see while out far from land are small land birds that have been swept out to sea. These small birds had no intention of going out to sea, as they are not suited to survive over water, but by an ill fated gust, they have now found themselves over open waters. 

These little birds will descend upon a sailboat as you are the only place for them to land and rest their tired wings.  Most of the birds that land aboard are quite grateful to have found you, as you are their only hope in survival, but they will still keep their distance from you. It is nice to offer them some water to drink by setting water in a small bowl and placing it somewhere far from you so the bird can drink and rest in peace.

This tiny little bird was actually very gregarious, he rested for a little while and then sprang to life with a full fury of energy! We had recently been bequeathed with a large gift of flies that had descended upon us earlier and this little bird landed in heaven. He would hop around the cockpit, hunting the flies! There were so many of them that he had an easy time about catching them. What was more humorous to us was that he seemed unfazed by our presence. He would climb all over us, hopping along on his little feet, as he stalked and ate the flies that were swarming around us. 

This little stowaway stayed with us for several hours, hunting most of the flies that had plagued us, until we passed by a light house and he took flight for the distance. Most birds will stay onboard until we get very close to land, but this little adventurous fellow was not waiting around for us to make landfall!