INTERNATIONAL CONVENTION SAFETY OF LIFE AT SEA. 



261 



2a. open boats having the upper part of the sides collapsible. 



A boat of this type shall be fitted both with watertight air cases and with external buoy- 

 ancy, the volume of which, for each person which the boat is able to accommodate, shall be 

 at least equal to the following amounts. 



Cubic decimeters. Cubic feet. 



Air cases 43 1.5 



External buoyancy (if of cork) ,. . 6 0.2 



The minimum freeboard of boats of this type is fixed in relation to their length; it is 

 measured vertically to the top of the solid hull at the side amidships, from the water level 

 when the boat is loaded. 



The freeboard in fresh water shall not be less than the following amounts: 



The freeboard of boats of intermediate lengths is to be found by interpolation. 



2b. pontoon boats having a well deck and collapsible bulwarks. 

 All the conditions laid down for boats of type IC are to be applied to boats of this 

 type, which differ from those of type IC only in regard to the bulwarks. 



2c. PONTOON BOATS^ IN WHICH THE PERSONS CANNOT BE ACCOMMODATED BELOW DECK, 

 having a flush DECK AND COLLAPSIBLE BULWARKS. 



The minimum freeboard of boats of this type is independent of their lengths and de- 

 pends only upon their depth. The depth of the boat is to be measured vertically from the 

 underside of the garboard strake to the top of the deck at the side amidships, and the free- 

 board is to be measured from the top of the deck at the side amidships to the water level 

 when the boat is loaded. 



The freeboard in fresh water shall not be less than the following amounts, which are 

 applicable without correction to boats having a mean sheer equal to 3 per cent of their 

 length : 



