Cathedral Hull Boats
Flat Bottom Cathedral Hull Range
Port Edward Boat Builders have a range of traditional shaped cathedral hull boats in a range of sizes
and specifications.
The Range starts with a flat bottom Cathedral Hull form. 3.0m x 1.5m 4 person boat. This simple
sturdy construction is more fuel efficient than the skiffs and suitable for engines up to 15HP.
The bottom shell is supported by two formed box section keels.
This Boat is finished with a carpet, permanent reserve buoyancy and as specified by the owner.
These boats are available in 3.0m 3.5m 3.7m 4.0m and 4.5m
Cathedral Hull Boats with 5 degree Rise of Floor
Traditionally boats are constructed with a keel. Our traditional designed Cathedral Hull Boats are
available with a 5 Degree Rise of Floor, 10 Degree Rise of Floor and 15 Degree Rise of Floor V Bottom
Hulls. The choice of Hull form is dependant on the conditions and size of your boat.
Larger boats operating in rough open waters such as large dams are best designed with a 10 to 15
degree vee bottom hull form, giving good separation of flow either side of the keel. This leads to
increased rolling. Rolling can be dampened by increasing the width aft.
Figure 4 5 Degree Rise of Floor for Drainage down and Aft
Figure 5 Flaring the boat Aft reduced the Roll of a Deep Vee Hull form
Our Range of Cathedral Hull boats have the following range of hull forms and the width is only
limited by the plate with available in South Africa.
Size
Flat Bottom
5 Degree RoF
10 Degree RoF
15 Degree RoF
Flare Aft for 10
and 15 Vee Hulls
3.0m
Yes
Yes
Yes
No
Yes
3.5m
Yes
Yes
Yes
Yes
Yes
3.7m
Yes
Yes
Yes
Yes
Yes
4.0m
Yes
Yes
Yes
Yes
Yes
4.5m
Yes
Yes
Yes
Yes
Yes
5.0m
Yes
Yes
Yes
Yes
Yes
The degree of complexity in construction increases across the table above and down the table, thus
increasing the build cycle and cost. Prices are based on a cost-plus basis.
Cathedral Hull Boats are available with Aluminium Decks, including split level decks.
Figure 6: Cathedral Hull form developed for deep vee hulls
Figure 7: Shallow Draft 5 degree hull forms for stable fishing
Figure 8: Fully Loaded 3.7m Fishing Boat