Power Boat
     Bowdidge
Marine Designs
Yacht, multihull and sailboat designs
@ WEB DESIGN BY BOWDIDGE MARINE DESIGNS

         We have boat plans (both yacht designs, catamaran designs and power designs) for all sizes. From the 12ft Mushulu Dinghy stitch & glue yacht tender to the Oceansky 57 catamaran. We design timber boats, plywood boats, strip plank boats, fibreglass composite boats, steel and aluminum boats to very modern styling for both monohull designs or multihull designs, powerboat or sailboat and in round bilge, multi-chine or radius chine hull forms.

  SportzMaster 19 Specifications, Performance and Plans list

The Path to your Dreams, may take you places...
You've never Imagined.

                            Construction

   Boat Plans
Sheet 1 - Profile & Arrangement Plan
Sheet 2 - Lines Plan
Sheet 3 - Strongback and Set-up Plan
Sheet 8 - Laminate Schedule
Sheet 9 - Longitudinal Construction & layout
Sheet 10 - Construction Plan & Profile
Sheet 17 - Electrical Drawing
Builders Construction Manual
Sheet 15 - Bulkhead Construction  Detail

                  The following drawings will be supplied.
             Back up service is also provided as needed. 
  All plans provided are drawn on 2ft by 3ft sheets 
               Includes full size Patterns

                   Quality & Comprehensive Plans for the
                                 Amateur Home Builder
                                                         PLANS LIST
Sheet 16 - Interior Construction Detail
The SportzMaster 19
"Ride the Wave"

SPORTZMASTER 19 SPECIFICATIONS
Length of Hull:  19ft     (5.79 m)
Beam: 7ft - 3in            (2.2 m)
Depth: 4ft - 0in          (1.2 m)
Transom Shaft Length: L/S (20" or 508mm)
Weight (boat + access.): 1100 lbs (500kg)
Min Rec. HP: 90hp
Rec. KW: 67.1 Kw
Max. HP: 120hp
Max. KW: 89.5 Kw
Main Motor Weight: 411lbs    (187kg)
Number of People (Basic): 6    (NOTE: 1 person = 1 adult or 2 children)
Max Load (Basic): 2019 lbs    ( 916 kg)

Design Brief:
The SportzMaster 19's personality manifests itself in the way she takes the sea. In a way, the SportzMaster 19 becomes an extension of the rod, unequaled as a partner in the battle, her reliability borders on relentless. To say the SportzMaster 19 is tough is to speak an understatement of immeasurable proportions. There is nothing casual in her lines or timid in her performance. She is a Sportz boat that is all business.The business of fishing, sportz and play.
Quite simply, the SportzMaster 19's is a yardstick by which others are measured.
"No game's, Just Sportz" is not just a slogan: it's a statement.
The principles on which the SportzMaster 19 is designed for are: strength, safety, seaworthiness and comfort. We will not sacrifice these in order to gain high performance. Nevertheless, our boats have a reputation as excellent performers. They are also known for their strength.

                                                                                    The Arrangement Plan

When it comes to taking the waves head-on, the SM19 packs a mighty punch. Big boat attitude in a small easy package describes the SportzMaster 19 in perfect detail.
The cockpit is open and uncluttered, giving you plenty of fish fighting room. Its console provides plenty of room for electronics and a removable transom gate allows access to the integral swim platform and starboard. Up forward the SportzMaster 19 has ample seating for your family and friends to lounge around with a ton of storage underneath.
 Easy to maintain and trailer, your SportzMaster 19 will provide you with years of family fun and offshore memories.

                                                                                                   Performance
     Approx Planing Speeds Vs HP @ 60% Propeller Efficiency
Horsepower vs Speed (kts)
Speed (kts) vs Trim Angle
Please click above image to enlarge
Click Image's to enlarge
                                                                            Australian Builders Plate

Australian Builders Plate
The purpose of the Australian Builders Plate
The Australian Builders Plate is a national initiative that will make boating safer by providing vital information about the capacity and capability of boats. The Australian Builders Plate requires boat builders to determine boat-specific information and display it on the plate in a standard format. The information that needs to be provided includes: 

  • recommended maximum engine power rating and engine weight for outboard engines 
  • recommended maximum person capacity and maximum load
    Flotation used (basic or level)
Click Image for More information
    All our Designs comply with the Australian Builders Plate / USCG National standards
""No Games, Just Sportz"
Sheet 11 - Full Size Bulkhead/Frame Patterns
Sheet 12 - Full Size Bulkhead/Frame Patterns
Sheet 13 - Full Size Bulkhead/Frame Patterns
Sheet 14 - Full Size Bulkhead/Frame Patterns
Sheet 4 - Full Size Temporary Frame Patterns
Sheet 5 - Full Size Temporary Frame Patterns
Sheet 6 - Full Size Temporary Frame Patterns
Sheet 7 - Full Size Temporary Frame Patterns

Running through HullSpeed (a part of our Maxsurf ship modeling program suite), the result is a light hull built in our standard material strip Plank composite construction. The deadrise is 63 degrees at the cutwater, about 18 midship and 14 degrees at the transom, the SportzMaster 19 has enough vee to handle offshore seas conditions, whilst her moderate beam includes wide chine flats to produce the stability and lift for planing at low speeds.
Propelled by 90-115hp outboard engine, the SportzMaster 19 slices through the roughest chop like a hot knife through butter, while giving you an exceedingly dry ride. And with her generous fuel capacity, you won’t have to let little things like time and distance keep you from meeting your angling destiny.

Please click above image to enlarge
Please click above image to enlarge

To determine speed and Hp requirements, simply look up on the graph what Hp you would prefer and scroll down to the speed given. This is for MAX Hp vs Speed.
For "cruising" speed, simply "multiply" the max Hp chosen by .8 and then note the speed for that given new HP.
Example:
Chosen Max Hp = 90,
Speed = 33 kts (38 mph/ 61 kph)
90 Hp (max) x .8 (80% throttle) = 72 Hp
refer graph: Cruising Speed = 30 kts (34 mph/ 55 kph) 

NOTE: Figures provided above are based the vessel being loaded as per a normal days outing & based   on conservative figures

CHOOSING YOUR HP REQUIREMENTS

  Australian Builders Plate / USCG Compliant