Exam Question
Explain the meaning and purpose of EACH of the following terms:
(a) Duct keel (4)
(b) Margin line (4)
(e) Sheer (4)
(d) Round of Bilge (4)
Class 4 (4th Engineer)
SC&S
📅 Dec 2024
Reference Answer
### (a) Duct Keel
**1. Definition and Construction:**
A duct keel is a structural box-like tunnel, forming the central longitudinal strength member of the ship's double bottom structure. It is constructed from solid plates, forming a watertight or non-watertight passage that runs along the ship's centerline, typically extending from the collision bulkhead to the forward engine room bulkhead.
**2. Purpose and Function:**
**1. Definition and Construction:**
A duct keel is a structural box-like tunnel, forming the central longitudinal strength member of the ship's double bottom structure. It is constructed from solid plates, forming a watertight or non-watertight passage that runs along the ship's centerline, typically extending from the collision bulkhead to the forward engine room bulkhead.
**2. Purpose and Function:**
Full answer on MeoMock — surveyor-grade reference answers for 7,000+ written exam questions.
Prepare on Android — MeoMock on Google Play