QUESTION: As I prepare for upcoming Drydock and Internal structural examinations what standards should I reference for hull thickness?
RESPONSE:
Existing Vessels: DD/ISE Planning and Hull Thickness NVIC 7-68 Inspection and Repair of Steel Hulls. This will provide you with minimum hull requirements and maximum wastage allowances.
New Vessels: Reference 46 CFR 144.205(a) Structural standards for a new vessel.
For a new vessel to be certificated for service on –
(1) Lakes, bays and sounds, limited coastwise, coastwise and oceans routes – follow ABS Rules for Building and Classing – Steel Vessel Under 90 Meters (295 feet) in Length; or
(2) Rivers and Intercoastal waterways – follow Steel Vessels for Service on Rivers and Intracoastal Waterways
These are both incorporated by reference, see 46 CFR 136.112.
46 CFR 144.205(d) The structural standard selected must be applied throughout the vessel including design, construction, installation, maintenance, alteration, and repair. Deviations are subject to approval by the Commanding Officer, Marine Safety Center.
For further guidance or discussion always feel free to reach out to an Operations Manager at TVIB by calling 832-323-3992 or click here to send an email.