Sea Strike 18
Sea Strike 18
THE SEA STRIKE 18
The Sea Strike 18 is a true player and built big to handle any conditions Mother Nature throws its way. With her deep-"V" 23 degree variable dead rise hull and utilizing the same high performance and fuel efficient hull design as its smaller sister the Sea Strike 16, the Sea Strike 18 is designed from the ground up, delivering everything the passionate offshore fisherman or family day boat demands... plus more.
Features include a live well, enormous total fish box capacity, walk through transom, a huge cockpit area aft and large casting platform forward for where all the action is on your offshore fishing rampages, wide side decks for all your rod holders, side pockets and more and a 200 litre fuel tank for those long offshore runs. And for those family day outings, it even has the option for a bow rider seating arrangement.
With our tournament-proven hull design, delivering top-end speeds, superb economical cruising speeds and great handling through a variety of conditions and a ride unlike any other, the Sea Strike 18 comes with more standard equipment and unique, pro-level fishing features than any boat in its class. Coupled with her deep v hull, the Sea Strike 18 will get you there faster, drier, and smoother than the rest.
SPECIFICATIONS:
- LOA ……18ft (5.5 m)
- BEAM ………7ft - 2in (2.2m) overall
- DRAFT/ hull only ………10-1/4″ (261mm) @ DWL
- Deadrise at transom ...… 23 degrees
- FUEL CAPACITY ....... 52.8 USG (200 Litres)
Horsepower… 150 Hp (max)
Outboard leg length.... 25"
- LEVEL flotation (built as per the plans)
APPROX TRAILER WEIGHT including a 150 hp motor…..1953 lbs (889 kg )
depending on materials and outboard options* ( This includes a full tank of fuel)
- Construction …. Epoxy Fibreglass Plywood Composite Construction
- Safety standards in compliance with the ABYC standard
- Structure is engineered in accordance with ABS class rules
Proudly Australian Designed
From the first sketch on the drafting board to the finished computer 3D modelling and CAD plans, every boat is designed in house by Mark Bowdidge (MRINA) himself.
After nearly forty years of building and designing boats, every design is specifically designed for Purpose, Performance, Seakeeping and Safety
Source: AUD @ Fri, 8 Nov.
SEA STRIKE 18 FEATURES
Just some of the features the Sea Strike 18 includes:
- Sleek yet simple and functional lines
- 23 º hull design offering a smooth ride in offshore or rough/white water conditions.
- Centre Console steering
- Side pockets for all your gear plus more
- Front casting deck for lure fishing plus easy access to the front locker and trolling motor when deploying
- Large 200 litre underfloor fuel tank
- Large storage compartments beneath the deck for storage of gear plus a large kill tank when fishing
- LEVEL flotation for compliance (we comply to the ABYC standards)
- Engineered to "Class" or Commercial shipping standards for those offroad or offshore fishing adventures.
- Easily handled by 1 person when trailering
Sea Strike 18 Frequently Asked Questions
What is included in the Sea Strike 18 Plans?
In regards to the Sea Strike 18 plans, it includes:
- 15 sheets in total (9 x A1 sheet size and 6 x A0 sheet size - full size bulkhead patterns)
- Full size patterns for bulkheads/ stem frame and transom
- Builders manual
- Bill of materials
- Nearly 300 build photo's for you to preview and assist with your build (A picture tells a thousand words" as the saying goes)
- Tip's and Tricks" e-book for building your boat
- Actual Performance results with various outboards/ props showing speed/ fuel consumption and more
- Plus a lot more
Below is an example of the type of plans you receive
Are you boats Builders Plate Compliant?
Yes.
We use the ABYC standard (https://abycinc.org/). (We do not use the AS 1799 standard, as we feel that this standard is full of "holes). Using the ABYC standard, all boats under 20ft MUST meet LEVEL flotation. It also means that the boat must meet certain stability criteria in regards to traverse stability, wind heeling criteria and max Hp allowed.
The Sea Strike 18, as designed exceeds the requirements for LEVEL flotation compliance. This covers the boat itself/ outboard/ people and cargo.
This standard is accepted worldwide.
We do not design our boats to meet BASIC flotation. To me, "Basic" flotation is dangerous.
Hope this helps
So what does Ply/Composite Construction mean?
So… what is Ply/ composite construction?
The term “composite means that if you use 2 or more materials in your construction layup, you must take into account for the mechanical properties of each material used. i.e. with Plywood and glass used we have to take into account for the materials Tensile strength/ Bending strength/ compression strength/ Shear strength and Modulus of Elasticity) in your engineering calculations. When you do this, its now "composite" construction.
Once it passes Tensile strength and bending strength for a particular area, we move to the next section. This method of engineering is applied throughout the whole boat.
Now… simply building a plywood boat and wetting out some glass on it is not composite construction. Its just a plywood boat with glass laid on.
All our Plywood and Strip plank designs are engineered as composites and in this regard, we engineer out boats to “Class” rules. In other words, we use Commercial ship standards. Here we use ABS or the "American Bureau of Shipping (https://ww2.eagle.org/en.html)
Here’s just one small area within the Sea Strike 16 (as an example) of the calcs we do with all our designs.
I hope this helps
Mark Bowdidge (MRINA)
Do you provide CNC cut files or kits?
No I do not.
So please don't ask, as refusal may offend
Can I get replace the ply/ composite internal structure and replace with foam core?
No.
By doing so, your:
1/ Making the boat too light. This means the boat will float higher in the water, exposing the chines which in turn results in the moment of inertia of the waterplane being reduced which results in an unstable boat.
2/ Taking the weight out of the bottom of the boat also raises the overall centre of gravity which further adds to an unstable rolly boat. Why? Plywood has a density of approx. 600 kgm^3, whereas foam has a density between 80-240 kg/m^3 (pending foam core used). So in effect, you've taken out between 60% to 87% of the weight that's down low. Whoops. Now you have a serious problem with stability.
3/ The boat will become too "flighty" when on the plane.
BUILD THE BOAT AS PER THE PLANS and you won't have an issue.
Can I make the Sea Strike 18 from Aluminium?
No.
Aluminium construction requires a different method of construction and scantlings. Also, being that aluminium is far heavier compared to Ply/composite construction, everything changes. Weight/ power/ stability/ seakeeping/ safety standards and more. It all changes. This means that the boat as a whole will need to be re-designed/ re-engineered/ re-drawn and throughout all this, making sure it meets the required stability and safety standards and flotation standards in the event of swamping. (Our boats meet LEVEL flotation requirements, not BASIC flotation.)