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Updated tunnel hull boat plans free zone January Can Norway win the global race to build a 'floating tunnel'? With majestic glaciers, fjords and mountains, Norway is famous for its dramatic natural landscape. Its rugged terrain does not make traveling easy. More than 1, fjords line the Scandinavian country's west coast, which is home to a third of the country's population of 5.

To make the 1, kilometer journey between the southern tunnel hull boat plans free zone of Kristiansand and Trondheim in the north via the west coast, for example, currently takes 21 hours, and requires seven ferry crossings. The plan includes bridges and the world's deepest and longest rock tunnel -- drilled through bedrock under the seabed -- measuring meters 1, feet deep and 27 kilometers 17 miles long.

But the most ambitious aspect is the development of submerged floating tunnels that sit around 30 meters feet under the surface of the water. A rendering of the tunnel's interiors.

Credit: NPRA. If successful, Norway could win a global race against countries including China, South Korea and Italy, which are researching similar projects. Why build a floating tunnel? A combination of motorways, roads and ferry rides, E39 runs along the southwestern Norwegian coast. The government intends to improve transport "for commercial purposes and also for the welfare of the tunnel hull boat plans free zone population," Dunham says.

Three suspension bridges and five floating bridges will be built. Floating bridges -- structures that are supported by pontoons -- have been built in Norway and the US, among other countries. When a fjord is deeper than 1 kilometer 0. The seabed would be too deep to be drilled through for a rock tunnel or for a suspension bridge's foundations to be laid.

Floating bridges do tunnel hull boat plans free zone work in all cases because they are susceptible to harsh weather conditions such as strong waves tunnel hull boat plans free zone currents. This is where the floating tunnels come in. The anatomy of a floating tunnel. The idea for a submerged floating tunnel is not new. InBritish naval architect Edward Reed proposed a floating tunnel across the English Channel -- an idea that was vetoed.

The term "floating" is perhaps misleading. The tunnels are fixed in position with cables -- either anchored to the seabed or tethered to pontoons which are spaced far enough apart to allow boats to pass.

Made of concrete, they would function like conventional tunnels, transporting vehicles from one end of a fjord to. A rendering that shows the floating tunnel anchored to the seabed via cables. Waves and currents at feet below sea level are less powerful than those at the surface, explains NPRA's chief engineer Arianna Minoretti.

Tunnel hull boat plans free zone addition, a floating tunnel minimizes the impact on the landscape since most of the infrastructure is out of sight.

It also creates less noise than traffic on a bridge. Ambitious project. The biggest risks in the project are explosions, fire and overloading, says Minoretti -- and so extensive testing is essential. The tests will help the team to understand what would happen to the tunnel's structure if, for example, a truck carrying dangerous goods exploded inside.

Results so far indicate that the constant water pressure that surrounds the floating tunnels reduces the damage caused by explosions. A rendering of a submerged floating tunnel under the surface of the water. Working with the Norwegian navy, the NPRA team is also investigating how the tunnels would fare if submarines crashed into. While locations for the submerged floating tunnels have not yet been pinned down, Minoretti says the project will be completed in just over 30 years' time.

The improved E39 will open up more of the west coast to tourism, while the tunnels may become attractions in their own right -- especially if they are a world .

Conclusion:

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To be completely candid, I felt that the XF20 was quite a nice boat in every respect except that I had a customer who was asking about one for his needs, which needed to be 4 feet shorter. So, I took many of the ideas I had in the Flatsmonster design and the Swamper series and combined them with the really nice elements of the XF20 to create the Blackwater Because of this choice of bottom shapes, this boat will be a lot more fun if you try to take it across a choppy body of water at speed.

The forward vee shape of the hull will allow for faster speeds in open water as it will help to cut through the waves rather than bounce over them.

This is a pocket tunnel hulled boat with a wide stance that can support two fishermen and all their gear in very, very thin water. The hull has defined, 8 degree vee sections up front to help break some of the light chop one might find on backwater sessions in the late afternoon. The run aft from amidships is very nearly flat to allow the boat to plane easily with a very small outboard.

I can really see this design as perfect for a duck hunter. Just rig a short mast in the center of the hull and hang a camo net over the gunnels and you have room to spare underneath for your cooler, your gun selection and the battery powered TV with earphones. Needless to say, the tunnel allows the engine to be raised up higher than normal giving additional clearance in the water for the prop to run in shallow water.

This means you can go further into the creeks in your boat while using the engine. That translates to being able to stay out longer and come home later because of the additional speed over a poled boat in really shallow water. There is a lightweight framework truss in the hull beneath the deck to give the boat longitudinal strength. The suggested bench seats and forward fishing platform also serve as flotation chambers to keep the boat afloat in case it is swamped.

The builders of this boat have the potential to build the interior out anyway they would like beyond the supplied bench seat design, but the more they add, the heavier the boat gets and that starts to take away the thin water capability of the design. Philippine mahogany in long, clear lengths is readily available.

Both woods work well with hand tools, but are somewhat split-prone: pre-drill and countersink for all screws on this boat; don't forget to stagger your fasteners as well.

I used mostly mahogany with Sitka spruce in less stressed areas, such as the seat bases. Buy your lumber well before building, and let it acclimate to your workshop before rough cutting it. I let mine air dry for a year in my garage before beginning construction. T he fastening schedule included with the building instructions calls for a variety of sizes of wood screws and boat nails.

Stainless screws are preferable they tolerate power driving better than bronze , and square drive "Robertson" to Canadians like myself are easiest to drive.

The screws are somewhat slower to drive, but they are painless to remove if misplaced and seem to pull two bent pieces together better than nails; this is especially helpful when installing the deck pieces. For the full story on epoxy techniques, see one of the following:. I s far as I am concerned, epoxy is the only glue suitable for this kind of boat. When the directions are followed closely it's easy to use, immensely strong, waterproof, and fills gaps well.

The two glues suggested in the bill of materials, plastic resin and resorcinol, have significant shortcomings:. I can understand not wanting to add the weight of epoxy coatings, reinforcing glass, etc. A lthough it's possible to build the Tunnel King entirely with hand tools, I think most of us would rather be on the water than sweating behind a ripsaw.

For this reason, I Tunnel Hull Boat Plans Free Site suggest builders be fairly well equipped with power tools before beginning construction. Below is a list of tools that, in my experience, are almost essential for building this boat:. A bout time we started building a boat, eh?

Once you have assembled all your tools and materials, and cleared out the garage, it's time to build the frames. The transverse 1x3's are cut to length, with the specified angles on the ends.

The plywood gussets, which are the heart of each frame, are shaped according to the full size templates provided by Glen-L. Since each frame needs two identical gussets, they should be tacked together and cut simultaneously. Make sure all curves are fair, the gussets and notches are correctly placed, etc.

The building manual suggests using a jig to ensure alignment during assembly; I think this is a great idea. Glue and fasten according to the fastening schedule.

Some material may be cut out of the center of each gusset to reduce weight. It is critical the frames be built accurately; otherwise the boat will never perform well and could have dangerous handling problems. T he next task is building the transom frame. Neither the Glen-L building manual nor the plans are particularly clear about the arrangement of blocking members; so please view the photos of the assembled transom that accompanies this article.

Again, accuracy and proper assembly procedures are imperative, as you will be hanging a plus pound motor off of this frame. A building jig? I thought Glen-L boats didn't require a building jig!

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