What is the length of anchor chain?
Short answer
| Anchor weight P | Chain length Lcc | Source |
|---|---|---|
| P < 180 kg | Lcc = 30 ln(P) – 42 m | Rec 10 §4.2 |
| P ≥ 180 kg | From Table 1 | IACS UR A1 |
| Distribution | Equal between bower anchors | UR A1 §A1.2.2 |
- Definition: IACS Rec 10 and UR A1 set minimum anchor chain length
- General limit: 4 × vessel’s mean length or 30 m, whichever greater
- Key instruments: Rec 10 §4.2, UR A1 §A1.2.2
- As Second Engineer: Verify installed length against class-approved value and maintain records
Full answer
The full answer explains each point step by step, with the regulations and figures behind it and the discussion from other candidates. It is in the MEO Class II section of the Marine One forum, open to members enrolled for the MEO Class II exam.