Freeboard

12

Freeboard

The purpose of this section is to ensure that all yachts are assigned a freeboard in accordance with ICll 1966. This section also outlines the requirements for draught marks to enable trim to be readily calculated.

12.1 General

12.1.1

The freeboard for the yacht and its marking should be approved by the Assigning Authority for the assignment of freeboard and issue of the International load Line Certificate (1966).

12.1.2

Yachts should comply with ICll for the assignment of a freeboard mark which corresponds to the deepest loading condition included in the stability information booklet for the yacht.

12.1.3 The freeboard assigned should be compatible with the strength of hull structure, intact and damage stability requirements for the yacht, and should ensure that minimum bow height requirements are met.

12.1.4

The Assigning Authority should provide the owner(s)/operator(s)/manager(s) of the yacht with a copy of the particulars of the freeboard assigned and a copy of the record of particulars relating to the conditions of assignment.

12.2 Freeboard Mark and Loading

12.2.1

The freeboard mark applied should be positioned port and starboard at amidships on the load line length and may be an all-seasons mark. The mark should be a permanent disc and be of contrasting color to the hull of the yacht in way of the mark.

12.2.2

The fresh water freeboard allowance should be obtained by deducting from the all seasons freeboard assigned, the quantity

∆4T millimeters

Where: ∆ = displacement in salt water in tonnes at the all-seasons draught T = tonnes per centimeters immersion at the all seasons load waterline Alternatively the deduction may be taken as 1/48th of the all-seasons draught of the ship at

amidships.

12.2.3 A yacht should not operate in any condition which will result in its appropriate freeboard marks being submerged when it is at rest and upright in calm water.

12.3 Datum Draught Marks

12.3.1 Datum draught marks should be provided at the bow and stern, port and starboard, and be adequate for assessing the condition and trim of the yacht. Such draught marks may be single datum lines.

12.3.2 The marks should be permanent and easily read but need not be of contrasting color to the hull. The marks need not indicate more than one draught at each position and should be above, but within 1000mm, of the deepest load waterline.

12.3.3 The draught to which marks relate should be indicated either above the mark on the hull and/or in the stability information booklet for the yacht. The position of the marks should be verified at initial placement by the Administration or the yacht's Assigning Authority.