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1000 All elevations Aerial wire crossing barges Bend lower end Bend upper end boats BUILT Burlington & Quincy Canal chan CHANNEL LINE Channel Span Chicago City Computed High Water Creek draw Elevation Low Steel elevations refer enters feet above high feet above low-water feet above pool Ferry GATES Gauge Grain HARBOR Highway Bridge Horizontal clearance ILLINOIS IOWA ISLAND foot ISLAND head ISLAND ISLAND LAKE LANDING less light Little Location LOCK & DAM LOCK AND DAM Louis low-water datum Mean Sea Level MILES ABOVE OHIO Milwaukee Minn Minneapolis MINNESOTA MISSOURI navigation North OHIO RIVER operator outlet partly inundated pass Paul & Pacific POOL ELEVATION pool stage Railroad refer to Mean regulations River mouth Rock Island rules SCALE OF FEET Sea Level Datum side signal SLOUGH SLOUGH lower end steamer Submarine cable crossing swing TERMINAL Vertical Clearance vessel Western width WISCONSIN
Page 34 - In obeying and construing these rules due regard shall be had to all dangers of navigation and collision, and to any special circumstances which may render a departure from the above rules necessary in order to avoid immediate danger.
Page 33 - ... shall be deemed to be an overtaking vessel, and no subsequent alteration of the bearing between the two vessels shall make the overtaking vessel a crossing vessel within the meaning of these rules or relieve her of the duty of keeping clear of the overtaken vessel until she is finally past and clear.
Page 34 - A sailing vessel under way shall sound, at intervals of not more than one minute, when on the starboard tack, one blast ; when on the port tack, two blasts in succession, and when with the wind abaft the beam, three blasts in succession. (d) A vessel when at anchor shall, at intervals of not more than one minute, ring the bell rapidly for about five seconds.
Page 42 - ... unbroken light over an arc of the horizon of ten points of the compass, so fixed as to throw the light from right ahead to two points abaft the beam...
Page 31 - Risk of collision can, when circumstances permit, be ascertained by carefully watching the compass bearing of an approaching vessel. If the bearing does not appreciably change, such risk should be deemed to exist.
Page 33 - ... the steam vessel which has the other on her own port side shall hold her course and speed; and the steam vessel which has the other on her own starboard side shall keep out of the way of the other by directing her course to starboard so as to cross the stern of the other steam vessel, or, if necessary to do so, slacken her speed or stop or reverse.
Page 41 - The rules concerning lights shall be complied with in all weathers from sunset, to sunrise, and during such time no other lights which may be mistaken for the prescribed lights shall be exhibited.
Page 31 - When two steam- vessels are meeting end on, or nearly end on, so as to involve risk of collision, each shall alter her course to starboard, so that each may pass on the port side of the other.
Page 40 - Nothing in these rules shall exonerate any ship, or the owner, or master, or crew thereof, from the consequences of any neglect to carry lights or signals, or of any neglect to keep a proper look.out, or of the neglect of any precaution which may be required by the ordinary practice of seamen, or by the special circumstances of the case.
Page 24 - Passing signals. — (a) Vessels intending to pass dredges or other types of floating plant working in navigable channels, when within a reasonable distance therefrom and not in any case over a mile, shall indicate such intention by one long blast of the whistle, and shall be directed to the proper side for passage by the sounding, by the dredge or other floating plant, of the signal prescribed in the local pilot rules for vessels under way...