Getting off under power Come off as you went on If you can contrive to reverse out on a reciprocal course to the one that put you aground, you know for sure that sooner or later you will float. Unless a different route seems viable or you have no choice, going out as you went in is the preferred option. Ahead or astern? Having made the point that ‘back is often better’, bear in mind that many propellers and gearboxes deliver more grunt going ahead than in astern. If yours is known to be like this and you can’t get off astern, try applying full helm and trying to spin the boat off ahead. The extra power may just do the trick. Sound around When circumstances militate against ‘Option 1’, either eyeball a better route if the water is clear enough, or use the backup leadline to sound around for deeper water. Haul off It’s not uncommon for a boat’s engines to lack the power needed to pull her off a shoal. In the absence of outside assistance, so long as a line can be secured somewhere off the boat in the direction you wish to go, it can be led to your most powerful winch and hove in as you gun the engine. The extra pull often makes the difference. Attach the line to a shore object or even a well-anchored mooring. If nothing is available, lay out your own anchor or kedge (secondary anchor) from the dinghy and use this. In the days of sail, the choice was often ‘kedge or nothing’.
Shift weight
When a boat has her maximum draught on her fore-and- aft midline, it’s sometimes possible to reduce this a little by shifting weight. This is comparatively easy for sailing boats to achieve. As well as having all hands hang over the ‘low’ side, weights such as a
Kedging off under power
full water can or an anchor can be attached to the end of the main boom then swung outboard. Adjusting fore-and- aft trim may also help. Gathering the crew right forward occasionally raises a power boat’s propellers clear of the bottom. On a sailing vessel this can lift the heel of the keel off. The difference may not be much, but a lot may not be required. Dump weight If you’re well and truly stuck, draught can be reduced by pumping the water tanks over the side, humping inside ballast ashore (traditional craft often have moveable ballast), and generally lightening ship. The ‘pluck off’ By all means accept an offer of a pull off from another boat, but be ready for heavy loadings and make sure you secure the towline to a very strong point, especially if the other boat has power to spare. Try to remain in control, because you don’t know how well your rescuer understands the task. Speak with the other skipper about any salvage claims he may have in mind and make an effort to contact your insurer. This is a more realistic proposition by mobile phone than ever it was by radio or pigeon. If in doubt, strike a deal. More often than not, your benefactor will be helping out in a friendly way on the seamanlike basis that it might be him next time.
To anchor
146 | MANUAL OF SEAMANSHIP
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74 |
Page 75 |
Page 76 |
Page 77 |
Page 78 |
Page 79 |
Page 80 |
Page 81 |
Page 82 |
Page 83 |
Page 84 |
Page 85 |
Page 86 |
Page 87 |
Page 88 |
Page 89 |
Page 90 |
Page 91 |
Page 92 |
Page 93 |
Page 94 |
Page 95 |
Page 96 |
Page 97 |
Page 98 |
Page 99 |
Page 100 |
Page 101 |
Page 102 |
Page 103 |
Page 104 |
Page 105 |
Page 106 |
Page 107 |
Page 108 |
Page 109 |
Page 110 |
Page 111 |
Page 112 |
Page 113 |
Page 114 |
Page 115 |
Page 116 |
Page 117 |
Page 118 |
Page 119 |
Page 120 |
Page 121 |
Page 122 |
Page 123 |
Page 124 |
Page 125 |
Page 126 |
Page 127 |
Page 128 |
Page 129 |
Page 130 |
Page 131 |
Page 132 |
Page 133 |
Page 134 |
Page 135 |
Page 136 |
Page 137 |
Page 138 |
Page 139 |
Page 140 |
Page 141 |
Page 142 |
Page 143 |
Page 144 |
Page 145 |
Page 146 |
Page 147 |
Page 148 |
Page 149 |
Page 150 |
Page 151 |
Page 152 |
Page 153 |
Page 154 |
Page 155 |
Page 156 |
Page 157 |
Page 158 |
Page 159 |
Page 160 |
Page 161 |
Page 162 |
Page 163 |
Page 164 |
Page 165 |
Page 166 |
Page 167 |
Page 168 |
Page 169 |
Page 170 |
Page 171 |
Page 172