[esailor Team]

Andrew Dewar, 7th Dec 1130-1300
Joshua GMA Candidate
Taken through the procedure for the online examinations, paperwork check etc.

1. List the statutory certificates you would expect to be onboard (went through all of them, including conventions, codes related to them)
2. What is the validity of the certificates normally?
3. How would you know when an annual survey was due – went into quite a bit of depth on Anniversary dates and how the date for survey is calculated backwards from the Certificate expiry date
4. What surveys is an ISM SMC subject to? Getting at Intermediate Audit
5. Vessel is due to dry dock in 6 months. Take me through preparing a dry dock specification. Began but then was asked what information you would give a Dry Dock in preparation for docking – I started with the Shell Expansion plan and we ended up going into a lot of detail – information contained, keel, garboard and shear strakes, hull thickness.
6. How would you know if your hull thickness was sufficient? (After Class procedures on hull thickness measurement)
7. Plate replacement in Dry Dock, what are you interested in?
8. Potential issues with welds on ship’s plate?
9. Verification of weld integrity – NDT testing methods, vacuum boxes
10. Other checks whilst vessel in dry dock? Went through hull inspection, propeller, rudder etc
11. Importance of dry dock specs and putting them out to tender?
12. Screen share for electrics
a. AVR system – take me through how it works. What happens if one diode fails? Two failures?
b. Circuit diagram of star delta starter – identify the key components. Why do we use star delta? In what circumstances would star delta not be useful? (He wanted bow thruster as DOL in case thruster needed to be used in an emergency…)
c. Circuit diagram of DOL motor – identify safeties, what are the types of thermal overload trip? – Went with Bi-Metallic, very happy with that.
d. What faults can occur on a motor? – Short circuit, earth fault, single phasing
13. What is discrimination? Where would you expect the safety devices w.r.t discrimination be located? (Looking for main switchboard)

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