Number of seats
The total number of seats provided in the boat is, in fact, the maximum number of adults for which it is designed. Usually, this number corresponds to the number of seats.
There are three things to keep in mind when choosing this indicator. Firstly, with the maximum number of people in the boat, it can be quite crowded and not very comfortable. Secondly, in addition to people, such boats often have to be loaded with luggage, which can be heavy and voluminous. Thirdly, the capabilities of the boat are limited not only by the number of seats, but also by the carrying capacity (see below). Therefore, if it is planned to carry large people and/or a large amount of luggage on the ship, it is best to choose a model with a margin for the number of seats.
As for the specific number, the smallest modern boats have
1 or
2 seats. Medium-sized models with
3 or
4 seats are also extremely popular.
5-seater options are relatively rare, and the largest models can accommodate
6 or more people.
Number of pressurized compartments
The number of separate compartments provided in the design of the boat's inflatable balloon. This arrangement increases the reliability and safety of the vessel: in the event of a puncture, air does not escape from the entire cylinder, but only from one compartment, the rest remain filled. Therefore, even the simplest modern boats have at least
two separate compartments, and in the most advanced this number can reach six.
The more compartments there are, the safer the vessel in case of damage to the cylinder, but the more complex and expensive its design is. Therefore, this parameter usually depends primarily on the size of the boat — after all, larger and lifting models should be more reliable and lose less buoyancy in case of damage.
Note that the inflatable keel (if any, see "Bottom type") is also taken into account in this case, since in fact it is also a separate pressurized compartment: for example, if
5 compartments are indicated for a model with such a bottom, this means 4 sections in sides plus keel.
Balloon diameter
The diameter of the boat's balloon — the inflatable shell that forms the sides — in a fully inflated state. This parameter primarily affects the dimensions of the cockpit (see below): with the same dimensions of the boat, a thicker cylinder leaves less space in the cockpit. Also, the carrying capacity is somewhat related to the diameter —
a large cylinder usually holds more air and gives more buoyancy; however, in fact, the possibilities for transporting goods are also highly dependent on the characteristics of the bottom and the overall strength of the structure.
Dimensions (LxW)
The dimensions of the inflated boat in length and width, along the outer edges (excluding oars, motor, etc.). This parameter allows you to estimate how much space the vessel will occupy in the working position. In addition, the first size value — length — indicates other parameters: the larger it is, the better the boat is suitable for gliding and, usually, its capacity is greater (see "Number of seats").
Fabric density
The density of the PVC fabric from which the boat is made.
The higher the density, the heavier the ship will be, other things being equal. In addition, it is generally accepted that a denser fabric is at the same time more durable, reliable and wear-resistant. However, much also depends on the characteristics of the production of a particular brand of PVC. As a result, the difference in performance between two boats with different densities may not be as significant as the difference in density itself.
Weight
The total weight of the boat with oars and decking (if any), but excluding the motor and additional attachments. The lighter the boat, the more convenient it is to carry, however, a small weight can affect either the price or the quality (compared to analogues). Weight also affects speed characteristics — a
lighter boat is easier to accelerate to high speed with the same motor power; however, do not forget that these characteristics also depend on the material, the shape of the bottom and many other parameters.