Manufactured in compliance with ISO 799-1:2019. Excerpt of Pilot Ladder Rules / 1. Side Ropes Each side rope shall be mildew-resistant manila rope, or a spun thermoset polyester rope with a polypropylene core of a colour that contrasts with the spun polyester. Ropes shall have a breaking strength of at least 24 kN, and the diameter should be 20 mm (63 mm circumference). 2. Steps The distance of inner edge of side ropes should be more than 400mm. The centre of each hole shall be at least 50 mm from the short edge of the step. The width of step is no less than 115 mm, and thickness no less than 25 mm. Each step shall be equally spaced at 330±20mm, of one-piece construction, of either hardwood or resilient plastic or rubber material, and its surface is grooved or patterned, or of a textured non-skid type which shall be integral with the step and shall be either moulded or cut into the step with the nominal depth of 3 mm. Non-skid adhesive sheeting may not be used. 3. The bottom 4 steps shall be made only of resilient synthetic or rubber materials. The rest of the ladder steps shall be of either hardwood or synthetic material. 4.Spreader Steps, Each spreader step shall meet the requirements for other ladder steps, except that each spreader step shall be at least 1.8 meter long. 5. Damaged steps shall be replaced with replacement steps meeting the relevant requirements in item 2 and 4, and shall not include more than two replacement steps and one replacement spreader step. If a ladder requires a third replacement step or a second replacement spreader step, it shall be rebuilt. 6. Step fixtures shall have rope seizing or purpose made arrangement such as solid nylon clamp blocks or hardwood clamp blocks to prevent the fasteners from loosening. Cable ties, u-clamps, worm driven clips are unacceptable. 7. Each metal fastener shall be made of material which is inherently or treated to be corrosion resistant. Ferrous metal part (not stainless steel) shall be coated in accordance with ISO 1461, stainless steel part shall be of a marine grade alloy with a corrosion resistance at least equal to grade “4401-316-00I” in ISO 15510:2014, aluminium part shall be 5 254 alloy or other grade containing not more than 0,06 % copper in accordance with ISO 209:2007. Metals in contact with each other shall be galvanically compatible, or insulated to prevent galvanic corrosion in a marine environment. 8. Marking The bottom of the top step and bottom of the lowest spreader step of the ladder shall be marked with: a) the name and address of the manufacturer; b) the manufacturer’s model designation; c) “ISO 799-1” and “SOLAS”; d) the year of assembly or reassembly of the ladder; e) identification of the approved maritime safety administration, along with any approval indications required by that administration, and f) where used, identification of an approved organization acting on behalf of the maritime safety administration.