Study Questions Flashcards
What is a T boat?
(46 CFR 175.110(a)) A vessel of less than 100 gross tons that carries 150 or less passengers, or has overnight accomodations for 49 or less passengers, and that:
- Carries more than six passengers, including at least one for hire.
- Is a submersible vessel and carrying at least one passenger for hire.
- Is a ferry carrying more than six passengers.
What gives us our authority to conduct T boat inspections?
46 USC 3301 (vessels subject to inspection), 14 USC 102 (Coast Guard authority to promulgate and enforce regulation for safety of life and property on high seas).
When did the modern subchapter T come into effect?
March 11, 1996.
When must a T boat also comply with SOLAS requirements?
(46 CFR 175.120) When carrying more than 12 passengers on an international voyage.
When does a T boat need a Load Line?
(46 CFR 175.122) When over 24 meters/79 feet on an international voyage and required by subchapter E.
For how long is a COI valid?
(46 CFR 176.107) For 1 year for SOLAS vessels, otherwise 5 years.
What is the order of severity for routes?
(46 CFR 176.110(b)) Oceans, coastwise, limited coastwise, Great Lakes, lakes/bays/sounds, rivers.
What passenger count criterion cannot be combined with any other criterion?
(46 CFR 176.113(c)) Deck rail length. Fixed seating and deck area may be combined.
What must be conspicuously placed in a position where it can be seen by passengers?
(46 CFR 176.302/306/310) The COI, stability letter, and COI expiration sticker.
When can the annual inspection take place, and what is its scope?
(46 CFR 176.500(b)) Within 3 months before or after each anniversary date, and the same scope but in less detail
When does a vessel need a hull exam or internal structural exam?
(46 CFR 176.600(c)) If it operates in salt water for more than 3 months in any 12 month period, every 2 years; otherwise, every 5 years.
What is the boundary line between salt and fresh water on the Columbia River?
(CID Policy 01-18) A line drawn from Point Ellice, WA to the NW corner of Astoria, OR.
What should be done with PFDs found to be defective and incapable of repair?
(46 CFR 176.808(d)) The owner or operator shall destroy it in the presence of the MI.
How many child-sized PFDs are required?
46 CFR 176.808(e)) 10% of the total number of people allowed on board, or one for each child if greater (school field trip etc.)
What reference is used to govern inspection and servicing of portable fire extinguishers?
(46 CFR 176.810(b)(1)) NFPA 10.
Does the person inspecting/servicing portable extinguishers need to hold any special certification?
(46 CFR 176.810(b)) Monthly inspection can be done without any special certification by owner/operator/designated crewmember. Non-rechargeable or –refillable extinguishers can be annually inspected by owner/operator/designated crewmember. All other extinguishers must be annually serviced by licensed individual or facility.
How often should a pressure vessel be examined or tested?
(46 CFR 61.10-5(a)) At least every 5 years.
What pressure vessels are not required to be inspected?
Those less than 5 cubic feet.
To what pressure should a pressure vessel be hydrostatically tested to?
(46 CFR 61.10-5(b,d)) If a defect is found, then 1.5x MAWP. Otherwise, to 1.25x MAWP, unless internal examination is possible in which case it need not be hydrostatically tested at all.
To what pressure should a pressure-relieving device on a pressure vessel be set to?
(46 CFR 54.15-5(c)) To 1.1x MAWP.
What should the range of a pressure sensing gauge on a pressure vessel be set to?
(46 CFR 54.15-5(f)) Not less than 1.2x nor more than 2x the pressure at which the pressure relieving device is set to function (1.1x MAWP).
What is the “5 year rule”?
(46 CFR 177.310) If a vessel’s particulars differs from the scantlings required by the applicable standard, but the owner can show the vessel has performed satisfactorily on the route and service requested for at least 5 years, the vessel’s scantlings may be accepted as adequate.
When can an FRP vessel not be made of NPFC MIL-R-21607E(SH) fire-retardant resin?
(46 CFR 177.410(b,c)) When the resin instead meets an ASTM E-84 flame spread rating of not more than 100 when in laminate form, or if:
- The galley (area containing heating elements exceeding 250 F) is surrounded by a B-15 boundary. Open flame heating systems are not allowed.
- Electrical equipment/switch boards must be protected from fuel or water sources. Sources of ignition must be isolated from combustible matter.
- Smoke detectors must be installed in accommodation spaces, service spaces, and isolated spaces containing and ignition source.
- Machinery spaces must be lined with noncombustible panels or insulation.
- Furnishings must comply with subchapter K regulations.
- Must not have overnight accommodations for more than 12 passengers.
- Must not be gasoline powered.
How many means of escape are required, and where should they be located?
46 CFR 177.500(a,b)) At least two, and they should be widely separated and (if possible) egress into different spaces such that a fire in one space does not impair both means of escape (see interim rule).
What is the minimum width of a door or passageway used as a means of escape?
(46 CFR 177.500(e,f)) Wide enough to allow easy movement of people wearing PFDs, and no less than 32 inches (28 inches if used solely by crewmembers).
How much force should deck rails be able to withstand?
(46 CFR 177.900(b)) A point load of 200 lbs at any point in any direction, and a uniform load of 50 lbs/foot applied to the top rail in any direction.
What is the required height of a deck rail?
(46 CFR 177.900(d)) For excursion vessels, 39.5” with courses at least every 4”. For other vessels, at least 36” with courses at least every 12”.
At what temperature does hot piping need to be insulated?
(46 CFR 177.970) 150 F.
When does a vessel need a stability booklet rather than a stability letter?
(46 CFR 178.220) When the CO, MSC determines it needs one.
When can a vessel get a Simplified Stability Test rather than a full stability test?
(46 CFR 178.310) When it:
- Is 65’ or less,
- Does not carry more than 12 passengers on an international voyage,
- Does not have more than one deck above the bulkhead deck,
- is not in question by the cognizant OCMI.
What is the assumed average weight per person for a SST?
(46 CFR 170.090) 185 lbs.
What is the minimum assumed weight for dive gear?
(46 CFR 178.330(4)(v)) 80 lbs.
What vessels need collision bulkheads?
(46 CFR 179.210) A vessel of more than 65’ in length, and vessels under 65’ if they carry more than 49 passengers, operate on exposed waters, are at least 40’ and operate on partially protected waters, or is constructed of wood and operates in cold water.
Can there be penetrations in watertight bulkheads?
(46 CFR 179.320(c)) Yes, but they must be minimized, as high and as far inboard as possible, and made watertight.
When are opening portlights allowed below the weather deck on vessels on exposed or partially protected routes?
(46 CFR 179.350(a)) When the lower sill of the portlight is at least 30” above the deepest load waterline.
When must through-hull openings have a positive action valve as near to the hull as possible?
(46 CFR 179.350(c)) When they are within 6” of the deepest load waterline.
What is the required height of the coaming on a weathertight door?
(46 CFR 179.360(d)) On exposed or partially protected routes, 6”. On protected routes, 3”.
When is a T-boat required to carry an EPIRB?
(46 CFR 180.64) When it operates on the high seas (i.e. exposed route).
When is a T-boat allowed to not carry distress signals?
(46 CFR 180.68(d)) When it operates on short runs limited to approximately ~30 minutes from the dock.
When is a T-boat allowed to not carry a floating waterlight?
(46 CFR 180.70(d)) When it is limited to daytime operations only.
How many child lifejackets are required to be kept on board?
(46 CFR 180.71(b)) A number equal to at least 10% of the total number of persons permitted on board, or at least one for each child if greater.
When are lights required on lifejackets?
(46 CFR 180.75) On vessels with oceans, coastwise, or Great Lakes routes, but NOT on ferries or vessels with limited coastwise routes.
When does a survival craft not require a float-free link in its painter line?
(46 CFR 180.130(a)(1)) When the vessel operates only in waters that are not as deep as the length of the painter.
How quickly must a crew be able to prepare and launch the survival craft?
(46 CFR 180.130(a)(5)) In less than 5 minutes.
What T-boats do not require a fixed fire extinguishing system protecting their engine room?
(46 CFR 181.115(b)) Existing vessels built of aluminum or steel.
What T-boats are required to have a fire pump on board?
(46 CFR 181.300) All vessels over 65 feet, all vessels carrying over 49 passengers, and all ferries.
How many hydrants are required on board vessels equipped with a fire pump?
(46 CFR 181.310(a)) A sufficient number to reach any part of the vessel with a single length of hose.
When can a fire hose not be connected to a hydrant?
(46 CFR 181.320(a)) When the hydrant is on an open or cargo deck without protection, and even then only during heavy weather or cargo handling operations.
What are the parts of a steering gear?
There are two primary types of steering gear on small vessels, hydraulic and
mechanical.
A balanced rudder has some area ahead of the rudder stock which helps to turn the rudder.An unbalanced rudder has all its area behind the rudderstock.
Tiller arm connects to the Clevis which is secured by a shoulder bolt.
When the vessel is hauled out for a dry dock inspection, check the rudder for excessive side to side movement. When the vessel is underway there is a large excessive side to side movement
What do you inspect on propeller shafts?
The packing gland, sometimes called the stuffing box, makes a watertight seal where the rotating shaft penetrates the hull. The packing gland is attached to the shaft tube, a pipe that penetrates the hull, with a short section of hose. The packing gland compressing the packing against the shaft making a watertight seal: 1-2 drops of water a minute
Not to be confused with a packing gland the mechanical shaft seal provides for a truly watertight penetration for the shaft through the hull. The shaft seal uses a rotating mechanical seal instead of packing. A properly installed and adjusted shaft seal will not leak.
The shaft strut supports the shaft at the propeller end and must be strong enough to prevent the shaft from flexing and withstanding groundings or collisions, the strut has a water lubricated bearing which needs to be replaced if worn 1/2 way down
Minimum Life Saving arrangement table
46 CFR 180.200c
