Abstract: A mobile marine drilling assembly has a horizontally disposed pontoon which floats on or is submerged below the surface of a marine environment. A first vertically disposed column is secured to the pontoon and extends upwardly therefrom. A work platform has an opening through which the column extends, and the platform overlies the pontoon and is vertically movable relative thereto along the column. A jack system is operably connected with the work platform and with the column for jacking the work platform along the column between a first position wherein the pontoon floats on the surface of the marine environment and a second position wherein the pontoon is disposed a substantial distance below the surface of the marine environment. An anchor is secured to the floor of the marine environment.

Abstract: A mobile, offshore, jack-up, marine platform, adjustable for sloping sea floor having a mat, a multilegged column pivotally connected thereto and a work platform slidably mounted on the column. Means are included for independently vertically adjusting at least one leg and/or offset ballasting of the work platform.

Abstract: A mobile, offshore, jack-up, marine platform, adjustable for sloping sea floor having a mat, a multilegged column pivotally connected thereto and a work platform slidably mounted on the column. Means are included for independently vertically adjusting at least one leg and for selectively cantilevering a drilling unit on the work platform, with offset ballasting of the work platform.

Abstract: A mobile, portable, and self-propelled corral for penning animals having three fence rail sides and one back side, there being a gate through one fence rail side, with the back side extending up from the rail sides on either side to form a roof over a portion of the corral, there also being facilities attached to the interior back side for feeding and watering the penned animals; the subject invention additionally having wheels mounted at each corner of the corral, two of the back wheels being driven by a prime mover motor means mounted upon the exterior back side together with means for riding upon the subject invention with steering means attached to at least one of the front wheels. By means of a steering lever connecting the front wheel, the invention may be propelled over land in steered fashion in order that selected areas may be pastured or chosen animals may be quarantined from a herd.