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CASTER type trailer is in A use at the Union Inland Freight station, New York City. This trailer in size, capacity and equipment agrees with the com- monly used caster type trailer for warehouse use. It consists of two longitudinal formed channel members extending the full length of the trailer. These two channels are connected at each end by a forged steel strap which acts as a separator and a tie bar. Fach channel supports. directly a caster assembly and a load wheel assembly. The wood floor boards rest direct- ly on the top or back of these chan- nels, setting crosswise of the trail- er. The ends of the boards are pro- tected by a continuous round-about angle with the horizontal flange of this angle at the top. This top flange may or may not be rabbeted into the wood deck. This round- about angle frame fits snugly over the ends of the channels and their connecting tie bars. The holding bolts passing through the top flange of this round-about channel and through the wood planking are pulled tight by the use of steel clamps hooked over the out- er flanges of the longitudinal chan- nels. The coupler members at each end are secured by bolts passing through the coupler casting, the round-about angle and the tie strap connecting the two channels. This assembly produces a trailer of no greater weight than those of approved type in common use but by virtue of the design and assem- bly certain features of distinct value are obtained. Rolling Bulkheads Used DIESEL electric grain carrier has been built recently abroad. This ship has 4 large hatches on each deck, served by 4. electric winches and 4 derricks to permit double gang operation for every hatch. The 4 holds are of equal cubic ca- pacity. A permanent steel bulkhead is fitted throughout the holds. In way of the hatch a portable steel rolling bulkhead, divided into two parts, of the Macanking type, is fit- ted in place of the usual shifting boards. This bulkhead is held in a top and bottom channel. The top channel is portable in the way of the hatch and fixed to the underside of the hatch web and to the end TUMUUUONUGNOOOOUOUUUOEOOANOOUOGUUUUUOOENOOOEQOOUOGUUEENEGNONAGiGUUOUUeoNSagnedOduaUouaenettttAty 6 Baris page is being devoted to short items on all matters having to do with the more efficient turn- around of ships. These items are in- tended to be of a helpful nature. We will welcome for this page brief descriptions, illustrated if possible, of any better or safer way of perform- ing any function in cargo handling. Also, any questions submitted will be answered by the editor. SUUUUUEDOUOUCUEELEAVANU OU GREAEAGAOAAUOOCUEEEOAAAAMMUOTOUU EAU NUANNOAOUU UNEP coamings of the hatch. Wheels, with eccentric bushes are fitted to the bulkhead for rolling it clear. The eccentric bushes permit taking the weight off the wheels _when the bulkhead is closed and opened. The hatch cover on the shelter decks are of the Macanking type. On Handling Pineapples N HANDLING pineapples at Ka- hatin, Hawaii, if time permits be- fore arrival of ship, the cars are dis- charged and the cases stacked on platform slings which are laid across boxes on transit shed floor so that they are ready to be lifted by power lift trucks and taken to apron, under the fall. In discharging the cars, the plat- form slings are placed at the doors. Roller conveyors are used to take the cases from the cars to the sling platforms. They are then lifted by power lift truck and moved the sev- eral feet or so to a place of rest on the floor, and await arrival of ship. Working cars direct to ship the conveyors are likewise used from in- side car to platform slings which have been placed directly in front of doors. Some are on trailers and some on boxes. On arrival of a lift truck with empty platform slings and trailers, the operator lifts one platform sling from boxes and hooks on one trailer load, taking both to the hatch. On arrival at hatch the trailer is dropped near at hand and the loaded platform sling which is on the truck is landed across boxes which are under the falls. The empty platform slings having been placed on the empty trailer. The power lift truck backs out, picks up the empty trailer and platform slings and returns to car. A finger lift truck is also used in this man- ner. The platform slings are hoisted MARINE REVIEW—July, 1933 into the hold by burton fall, land- ed in the hatchway and section roll- ers are used to take the cases to place of stowage in the hold. In the case of sideport ships, the rollers are used from the apron through the side port to stowage. The same means are employed from car to shipside. Using Care in Stowage AUSTIC soda, sal soda and soda C ash, coming in contact with galvanized sheets and pipe which have become wet from sweating or other causes, removes the galvaniz- ing and results in heavy damage claims. Paint is also removed from cargo and ships’ structure by these soda products; plain steel is not damaged, rust only is removed. Damage is now ayoided by pro- tecting surrounding cargo and ships’ structure by matting or by dunnage boards and tar paper. In slinging overside, care must be taken to pre- vent soda from sifting on to other cargo. A platform sling is better suited for handling this character of cargo than a rope or a canvas sling. Rope or canvas slings cause the soda ash to sift as the slingload is jerked overside. Insulated Hatch Covers NSULATED hatch covers of Macanking type are made in three thwartship sections to suit the usual practice. The sections are built of steel plates with athwart- ship stiffeners, and are insulated on the underside in a similar manner to the deck. Brine grids are per- manently housed on the underside of the cover sections. The cover sections (with brine grids attached) roll off in a fore and aft direction by means of the Macanking wheels fitted with eccen- tric bushes. A one-half turn of the bushes with a marlinspike raises the cover about an inch from the watertight packing. The covers are arranged so that any one section can be left open by rolling. Hateh coamings should _ be equipped with sockets and stanch- ions so that safety lines may be stretched around hatches when hatch covers are off and no cargo is be- ing worked. 33